76 . A man can reach a certain place in 40 hours . If he reduces his speed by 1/15th, he goes 5 km less in that time . Find the total distance covered by him.

A. 60 km
B. 85 km .
C. 52 km .
D. 75 km .

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Answer: Option D

Explanation:

Correct Option: D

Let Distance = D km, Speed = S km/h

Time =	Distance
	Speed

40 =	Distance	.... (1)
	Speed

After reducing speed,

Distance = Distance – 5 km, Speed = S ×	14	km/h
	15

Time =	Distance
	Speed

40 =	(Distance – 5)		.... (2)
	Speed ×	14
		15

After solving equation 1 and 2

Distance	=	(Distance – 5)
Speed		Speed ×	14
			15

14 Distance = 15 (Distance – 5)

14 Distance = 15 Distance – 75

Distance = 75 km.

Hence, option D is correct.

Officer (General) -Ansar VDP Unnayan | BD House Building Finance Corporation 28.09.2018

A. 12.5 km / hr
B. 13 km / hr
C. 14.5 km / hr
D. 20 km / hr

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Answer: Option A

Explanation:

gullible (adjective): easily persuaded to believe something; credulous. "an attempt to persuade a gullible public to spend their money" Similar: credulous over - trusting over - trustful trustful easily deceived/led

Officer (General) -Ansar VDP Unnayan | BD House Building Finance Corporation 28.09.2018

A. Tk.16000
B. Tk.15000
C. Tk.10500
D. Tk.20000
E. Tk.18000

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Answer: Option E

Explanation:

প্রশ্নে বলা হচ্ছে যে, একজন লোকের ১২০ দিনের জন্য কিছু টাকা প্রয়োজন । সে ব্যাংকের কাছে লোন চাইল । ব্যাংক তাকে ৬% হার ৩৬০ টাকা চার্জ করল । প্রশ্ন হলো সে ব্যাংক থেকে মোট কত টাকা নিয়েছিল ?

আমরা জানি, I = prt/100

এখানে,

I = সুদ/চার্জ = 360,

r = সুদের হার = 6% ,

t = সময় = 120 days = 120/30 মাস = 4 মাস = 4/12 বছর = 1/3 বছর

= > 360 = p×6×13100">p×6×13100

∴ p = 18,000

Sonali- Janata &amp- Agrani Bank Offier (Cash Recruitment) 22.02.2008

A. 24 years
B. 40 years
C. 28 years
D. 32 years

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Answer: Option C

Explanation:

Let, Son current age = P

Man current age = 3P

According to Question, (P+10)+(3P+10) = 76

4P = 76-20 = 56

P = 14

now, Son current age = 14 years

Man current age = 42 years

So, when his son was born, the man age was = 42-14 = 28 years (Ans)

80 . A man purchased a shirt at Taka 300 after availing a discount of 25%. What is the catalog price of the shirt?

A. Tk. 400
B. Tk. 225
C. Tk. 375
D. Tk. 500

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Answer: Option A

Explanation:

ধরি, শার্ট এর মূল্য= ক টাকা।

প্রশ্নমতে,

(১০০-২৫)% এর ক=৩০০

বা, ক*(৭৫/১০০)=৩০০

বা, ক=(৩০০*১০০)/৭৫

বা, ক=৪০০ (উত্তর)

সমন্বিত ৫ ব্যাংক | অফিসার ক্যাশ | 25-03-2022 ||

A. 5 : 30 pm
B. 5 : 25 pm
C. 5 : 21 pm
D. 5 : 27 pm

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Answer: Option C

Explanation:

Man climbs 1m and slips down 50 cm (0.5m) in one minute
i.e. he climbs (1 - 0.5 = 0.5 m) in one minute.
But in the last minute, he will be climbing 1m as he gets on the top so no slip.
Time taken to climb 11 meter = (10/0.5) + 1
= 21 minutes.
He climbs the wall at 5:21 pm

অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯

A. 1 km/hr
B. 2 km/ hr
C. 3 km /hr
D. 4km/ hr

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Answer: Option A

Explanation:

Speed of the boat = x kmph, the river current = y mph.
3H45M = (3 + 45/60) hr = 15/4 hr
2H30M = (2 + 30/60) hr = 5/2 hr.
According to the question:
x + y = 22.5/(15/4) = 6
x - y = 10/(5/2) = 4
2x = 2
x = 1.
Ans: A

অফিসার (ক্যাশ) নিয়োগ পরীক্ষা- ১২-১০-২০১৮ ||

A. 18
B. 24
C. 36
D. 45

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Answer: Option B

Explanation:

লোকটি প্রথম 2 ঘণ্টা অতিক্রম করে = 30 × 2 = 60 মাইল

∴ Average speed = মোট দূরত্ব / মোট সময়

= ( 60 + 60)/(2 + 3)

= 120/5

= 24 mph

সমন্বিত ৮ ব্যাংক | অফিসার | 21-01-2022

A. TK. 75
B. TK. 175
C. TK. 225
D. TK. 240
E. TK. 250

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Answer: Option D

Explanation:

First 100 jars cost = 100×.56 = 56Tk.

Next 200 jars cost = 200×.56 = 110tk

Total cost for 300 jars = 56 + 110 = 166 Tk.

The selling price for the 300 jars of pickles = 166 + 75 = 241 Tk.

correct answer 241

Bangladesh Bank - Assistant Director - 2013 ||

A. 400kg
B. 560kg
C. 600kg
D. 640kg

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Answer: Option C

Explanation:

ধরি, 18% profit - এ বিক্রি করে x Kg

8% profit এ বিক্রি করে ( 1000 - x) Kg

(1000 - x) × 8/100 + x × 18/100 = 1000 এর 14/100

8000 - 8x + 18x = 14000

10x = 14000 - 8000

x = 6000/10

x = 600

86 . a motor -cycle covers 40 Km with a speed of 20 km /hr. Find the speed of the motor -cycle for the next 40 km journey so that the average speed of the whole journey will be 30 km / hr.

A. 70.0km /hr
B. 52.5km /hr
C. 60.0km/hr
D. 60. 5 km / hr

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Answer: Option C

Explanation:

Let the desired speed be x km/hr
ATQ,
40/20 + 40/x = 80/30
Or, 1/20 + 1/x = 2/30
Or, 1/x = 1/15 - 1/20
Or, 1/x = (4 - 3)/60
Or, x = 60
So, the desired speed is 60 km/hr

Sonali- Rupali- Bangladesh Krishi- Rajshahi krishi unnayn-Investment Corporation of Bangladesh | 30.11.2018

A. 70
B. 52.5
C. 60
D. 60.5

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Answer: Option C

Explanation:

Let the desired speed be x km/hr
ATQ,
40/20 + 40/x = 80/30
Or, 1/20 + 1/x = 2/30
Or, 1/x = 1/15 - 1/20
Or, 1/x = (4 - 3)/60
Or, x = 60
So, the desired speed is 60 km/hr

Senior Officer- 8 Bank Recruitment Test 31-08-2018

A. 165%
B. 90%
C. 65%
D. 10%
E. None of these

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Answer: Option E

Explanation:

Trucks = 30% of 300 = 90

Other Vehicles (Excluding Trucks) = 300 - 90 = 210

Diesel Vehicle = 20% of 300 = 60 (Including 15 Trucks)

Other Diesel Vehicles (Excluding Trucks) = 60 - 15 = 45

Trucks that are NOT diesel = 90 - 15 = 75

Other Vehicles that are NOT diesel Vehicles = 210 - 45 = 165

Required % = (165/300)×100 = 55%

89 . A motorcyclist rode to work at an average speed of 15 miles per hour and returned home along the same route at an average speed of 45 miles per hour. If his entire traveling time was 1 hour, what was the total number of miles in the round trip?

A. 30
B. 36.5
C. 45
D. 15
E. 22.5

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Answer: Option E

Explanation:

He travels 20 miles at a speed of 15 mph so he takes 20/15 = 4/3 hrs to travel one way. Since total time is 2 hrs, he must have taken 2 - 4/3 = 2/3 hrs while returning.
Speed while returning = 20/(2/3) = 30 mph

90 . A number consists of two digits. The sum of the digits is 10. If 72 is subtracted from the number, it's digits are interchanged. Find the number.

A. 82
B. 37
C. 55
D. 73
E. 91

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Answer: Option E

Explanation:

Let's use algebra to solve this problem. Let the two-digit number be represented as 10a + b, where 'a' is the tens digit and 'b' is the units digit.

We are given two conditions:

The sum of the digits is 10, so we can write the equation: a + b = 10

When 72 is subtracted from the number, the digits are interchanged. This means that 10a + b - 72 becomes 10b + a. We can write this as another equation: 10a + b - 72 = 10b + a

Now, let's solve this system of equations:

From equation 1, we can express 'b' in terms of 'a': b = 10 - a

Substitute this expression for 'b' into equation 2: 10a + (10 - a) - 72 = 10(10 - a) + a

Now, simplify and solve for 'a': 10a + 10 - a - 72 = 100 - 10a + a

Combine like terms: 9a + 10 - 72 = 100 - 9a

Subtract 10 from both sides: 9a - 62 = 100 - 9a

Add 9a to both sides: 18a - 62 = 100

Add 62 to both sides: 18a = 162

Divide by 18: a = 9

Now that we have found 'a' to be 9, we can find 'b' using the first equation: a + b = 10 9 + b = 10

Subtract 9 from both sides: b = 10 - 9 b = 1

So, the tens digit 'a' is 9, and the units digit 'b' is 1. Therefore, the two-digit number is 91.

76 . A man can reach a certain place in 40 hours . If he reduces his speed by 1/15th, he goes 5 km less in that time . Find the total distance covered by him.

77 . A man covers a total distance of 100 km on bicycle . For the first 2 hours , the speed was 20 km / hr and for the rest of the journey , it came down to 10 km / hr. The average speed will be

78 . A man is in need of money for 120 days. He asked the banker and the banker charged Tk.360 at the rate of 6%. What was the amount asked for?

79 . A man is now 3 times as old as his son. In 10 years time, the sum of their ages will be 76. How old was the man when his son was born?

80 . A man purchased a shirt at Taka 300 after availing a discount of 25%. What is the catalog price of the shirt?

81 . A man starts climbing a 11 m high wall at 5 pm. In each minute he climbs up 1m but slips down 50 cm. At what time will he climb the wall?

82 . A man takes 3 hours 45 minutes to row a boat 22.5 km downstream of a river and 2 hours 30 minutes to cover a distance of 10 km up stream . Find the speed of the river current in km /hr.

83 . A man travels for 2 hours at 30 miles an hour and he covers 60 miles in the next 3 hours . What is the average speed per hour for the entire trip?

84 . A manufacturer of pickles wants to make a profit of TK. 75 when he sells 300 jars of pickles. It costs TK. 0.65 each to make the first 100 jars of pickles and TK. 0.55 each to make after the first 100. What price should he charge for the 300 jars of pickles ?

85 . A merchant has 1000 kg of sugar, part of which he sells at 8% and the remaining at 18% profit. He gains 14% on the whole. Find the quantity of sugar that he sold at 18% profit.

86 . a motor -cycle covers 40 Km with a speed of 20 km /hr. Find the speed of the motor -cycle for the next 40 km journey so that the average speed of the whole journey will be 30 km / hr.

87 . A motor cycle covers 40 km with a speed of 20 km/hr. Find the speed of the journy so that the average speed of the whole journey will be 30 km/hr?

88 . A motor pool has 300 vehicles of which 30% are trucks. 20% of all the vehicles in the motor pool are diesel, including 15 trucks. What percent of the motor pool is composed of vehicles that are nither trucks nor diesel?

89 . A motorcyclist rode to work at an average speed of 15 miles per hour and returned home along the same route at an average speed of 45 miles per hour. If his entire traveling time was 1 hour, what was the total number of miles in the round trip?

90 . A number consists of two digits. The sum of the digits is 10. If 72 is subtracted from the number, it's digits are interchanged. Find the number.

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