121 . 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?

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

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সাবস্ক্রিপশন লিংক

122 . 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?

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

View Answer	Favorite Question

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%

123 . 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

View Answer	Favorite Question

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

124 . 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.

125 . A number is as much greater than 36 as is less than 86 . Find the number.

A. 68
B. 43
C. 61
D. 73

View Answer	Favorite Question

Answer: Option C

Explanation:

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

A. 0.04
B. 0.25
C. 0.40
D. 2.5
E. 25

View Answer	Favorite Question

Answer: Option E

Explanation:

Truncate - কেটে ছোট করা, wind up - শেষ করা । বাক্যের অর্থ – যখন আমরা দেখলাম, আমাদের সময় প্রায় শেষ, প্রত্যেককে তার পারফরম্যান্স শেষ করতে বললো ।

Agrani Bank Ltd. Recruitment Test for Senior Officer 12.02.2010

A. 9
B. 14
C. 20
D. 6
E. 15

View Answer	Favorite Question

Answer: Option E

Explanation:

We know, divident = quotient x divisor + remainder

So, divident = quotient x 105 + 99

Now, 105 is completely divisible by 21 yielding the quotient 5. So, we only need to divide the remainder 99 by 21 to see if any remainder remains.

Now, 99 = 4 x 21 + 15. So, 15 will be remained as a remainder if the number is divided by 21 instead of 105.

128 . A passenger paid 50% customs duty on accompanied baggage items. He paid another 20% sales tax on the total value of the items plus the custom duty paid. The total custom duty and sales tax is Tk. 350. what is the value of the item custom duty and sales tax?

A. Tk.400
B. Tk. 450
C. Tk. 500
D. None these

View Answer	Favorite Question

Answer: Option D

Explanation:

Let,value of item be 100x

Custom duty=50%

value of item with custom duty =150x

Another 20% sales tax duty=150x×20%=30x

Total custom duty and sales tax= 50+30=80x

ATQ,

350/80x × 100x = 437.5

Ans: None these

বাংলাদেশ ব্যাংক || সহকারী পরিচালক 28-10-2022

A. 30
B. 35
C. 40
D. 50

View Answer	Favorite Question

Answer: Option C

Explanation:

A person's present age is two-fifth of the age of his mother. After 8 years , he will be one-half of the age of his mother . How old is the mother at present ?

Let, present age of mother = x
present age of the person or son = 2x/5

After 8 year,
mother's age = x+8
son's age = 2x/5 + 8

As per question,
2x/5 + 8 = (x+8)/2
or, (x+8)/2 - 2x/5 = 8
or, x=40

So, present age of mother = 40 years (Ans:)

Bangladesh Bank - Assistant Director - 2016

A. Tk. 1580
B. Tk. 1180
C. Tk. 1260
D. Tk. 1225

View Answer	Favorite Question

Answer: Option C

Explanation:

For 5% loss, buying price of watch = (1140*100)/95 = 1200 tk

For earning 5% profit, selling price should be = (1200*105)/100 = 1260 tk (Ans)

131 . A person rides a bicycle round a circular path of radius 50 m. The radious of the wheel of the bicycle is 50 cm. The cycle comes to the starting point for the first time in 1 hour. what is the number of revolutions of the revolutions of the wheel in 15 minutes?

A. 20
B. 25
C. 30
D. 35

View Answer	Favorite Question

Answer: Option B

Explanation:

Circumference of the circular path = 2/\50 = 100 /\ m This means 100 /\ m is the distance covered in 60 minutes Therefore distance covered in 15 minutes = 1/4 x 100 /\ m = 25/\ m Now distance covered in one revolution of the wheel = 2 /\(1/2) m = /\ m Therefore number of revolutions in 15 minutes = 25/\ //\ = 25 Read more on Brainly.in - https://brainly.in/question/8996103#readmore

Sonali &amp-Janata Bank | Officer (IT)| 04.01.2019

A. Tk. 3000
B. Tk. 5000
C. Tk. 7000
D. Tk. 8000

View Answer	Favorite Question

Answer: Option D

Explanation:

Senior Officer (IT) - Sonali-Janata-BD Krishi-BD Development Bank Ltd - 30.11.2018

A. 250
B. 75
C. 110
D. 200

View Answer	Favorite Question

Answer: Option B

Explanation:

Assit. Programmer | Sonali Bank- Rubali Bank- BD Krishi Bank - 16.11.2018

A. 110
B. 130
C. 200
D. 240
E. 75

View Answer	Favorite Question

Answer: Option E

Explanation:

Let, Number of women x

so, Number of men = x + 20

so, x + x + 20 = 240

বা, 2x = 220

বা, x = 110

Number of women 110

and Number of men = 110 + 20 = 130

135 . A police man spots a mugger from a distance of 200 meters. As the police man starts chasing the mugger, the mugger also starts also starts running. Given that the speed of the mugger is 10 km/h and that of the police man is 12 km/h, how far would have the mugger run before he is caught?

A. 3 km
B. 4 km
C. 2 km
D. 1 km
E. None of these

View Answer	Favorite Question

Answer: Option D

Explanation:

Lets say the mugger ran for T hours before being caught.

200 meters = 0.2 km

ATQ, 12T = 10T + 0.2

Or, 12T - 10T = 0.2

Or, T = 0.1 hour

So, he ran = 10T = 10 x 0.1 = 1 km.

121 . 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?

122 . 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?

123 . 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?

124 . 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.

125 . A number is as much greater than 36 as is less than 86 . Find the number.

126 . A number is multiplied by 4 and then the product is divided by 100. This same result can be obtained if the original number is divided by--

127 . A number when divided by 105 leaves 99 as remainder. What will be the number if the number is devided by 21?

128 . A passenger paid 50% customs duty on accompanied baggage items. He paid another 20% sales tax on the total value of the items plus the custom duty paid. The total custom duty and sales tax is Tk. 350. what is the value of the item custom duty and sales tax?

129 . A person's present age is two - fifth of the age of his mother. After 8 years. he will be one half of the age of his mother . What is the present age of the mother?

130 . A person incurs a loss of 5 % by selling a watch for Tk. 1140. At what price should the watch be sold to earn 5% profit?

131 . A person rides a bicycle round a circular path of radius 50 m. The radious of the wheel of the bicycle is 50 cm. The cycle comes to the starting point for the first time in 1 hour. what is the number of revolutions of the revolutions of the wheel in 15 minutes?

132 . A person saves Tk. 5000 in his bank account . If the bank gives 10% annual profit , how much will be his balance after 6 years?

133 . A picnic attracts 240 persons. There are 20 more men than women and 20 more adults than children . How many men are at this picnic?

134 . A picnic was attended by 240 persons. There were 20 more men than women and 20 more adults then children. How many men were there in the picnic?

135 . A police man spots a mugger from a distance of 200 meters. As the police man starts chasing the mugger, the mugger also starts also starts running. Given that the speed of the mugger is 10 km/h and that of the police man is 12 km/h, how far would have the mugger run before he is caught?

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