106 . A leader rests against a wall is perpendicular to the ground if the bottom of the ladder is 4m away from the bottom of the wall, while the top of the ladder is at a height of 3m. What is the length of the ladder.

A. 7m
B. 35m
C. 5m
D. 25m

View Answer	Favorite Question

Answer: Option C

Explanation:

Applying the Pythagorean theorem:

L^2 = (distance to the wall)^2 + (height)^2 L^2 = 4^2 + 3^2 L^2 = 16 + 9 L^2 = 25

Taking the square root of both sides:

L = √25 L = 5

Therefore, the length of the ladder is 5 meters.

জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা-(NSI) Assistant Director- Research officer &amp- Assistant Programmer-০৮/১০/২০২১

A. 7
B. 16
C. 9
D. 8

View Answer	Favorite Question

Answer: Option D

Explanation:

40 ঘন্টার জন্য regular pay ( 30 × 40) টাকা = 1200 টাকা।

Overtime এর টাকার পরিমান ( 1680 - 1200) টাকা = 480 টাকা

যেহেতু, Overtime এর প্রতিদিনের টাকার পরিমান Regular Payment এর দ্বিগুন , সেহেতু overtime এর সময় ( 480 ÷ ( 30 × 2) ) ঘন্টা = 8 ঘন্টা

108 . A man and a boy together can complete a job in 81 days. Two man and three boys together can complete the job in 36 days. In how many can 4 men working together complete the job?

A. 30
B. 36
C. 38
D. 21
E. 27

View Answer	Favorite Question

Answer: Option E

Explanation:

Man = M , Boy = B

1M + 1B = 1/81

81M + 81B = 1 work

2M + 3B = 1/36

72M + 108B = 1 work

81M + 81B = 72M + 81B

9M = 27B

1M = 3B

4M = 12B

12B = 4/12 x 81 Days

4M = 27 Days

109 . A man ate 100 bananas in five days, each eating 6 more than the previews day. How many bananas did he eat on the first day ?

A. 6
B. 7
C. 10
D. 8
E. None of them

View Answer	Favorite Question

Answer: Option D

Explanation:

x + (x + 6) + (x + 12) + (x + 18) + (x + 24) = 100 or, x = 8

Bangladesh Bank - Assistant Director - 2012

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

View Answer	Favorite Question

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

View Answer	Favorite Question

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

View Answer	Favorite Question

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

View Answer	Favorite Question

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)

114 . 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

View Answer	Favorite Question

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

View Answer	Favorite Question

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

View Answer	Favorite Question

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

Officer (Cash) -Sonali Bank | BD Development | BD Krishi Bank - 12.10.2018

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

View Answer	Favorite Question

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

View Answer	Favorite Question

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

View Answer	Favorite Question

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

120 . 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

View Answer	Favorite Question

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

106 . A leader rests against a wall is perpendicular to the ground if the bottom of the ladder is 4m away from the bottom of the wall, while the top of the ladder is at a height of 3m. What is the length of the ladder.

107 . A man's regular pay Tk. 30 per hour up to 40 hours. Overtime is twice the regular payment. If he was paid Tk. 1680, how many hours overtime did he work?

108 . A man and a boy together can complete a job in 81 days. Two man and three boys together can complete the job in 36 days. In how many can 4 men working together complete the job?

109 . A man ate 100 bananas in five days, each eating 6 more than the previews day. How many bananas did he eat on the first day ?

110 . 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.

111 . 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

112 . 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?

113 . 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?

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

115 . 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?

116 . 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.

117 . 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?

118 . 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 ?

119 . 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.

120 . 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.

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