Name of Section:

Senior Officer 2017 [MCQ]

51. The average age of 12 children is 15 years. If another child comes the average age comes to 13. What is the age of the new child?

[Senior Officer 2017 [MCQ] : 2017]

1. 11 years

1

2. 7 years

2

3. 9 years

3

4. 5 years

4

5. The answer is wrong

5
Answer
52. A train 150 meter long and running at a speed of 60 km per hour takes 30 seconds to cross a bridge. What is a length of the bridge?

[Senior Officer 2017 [MCQ] : 2017]

1. 450 meter

1

2. 500 meter

2

3. 350 meter

3

4. 650 meter

4
Answer
53. A dishonest shopkeeper professes to sell ghee at his cost price. But he uses a false weight of 950g for a kilogram. His gain percentage is :

[Senior Officer 2017 [MCQ] : 2017]

1. 5.26

1

2. 4

2

3. 3

3

4. 4.5

4
Answer
54. A sum of money at simple interest amounts to Tk. 2800 in 2 years and to Tk. 3250 in 5 years at a rate of :

[Senior Officer 2017 [MCQ] : 2017]

1. 4%

1

2. 3%

2

3. 5%

3

4. 6%

4
Answer
55. A dog takes 4 leaps for every 5 leaps of a hare but 3 leaps of the dog is equal to 4 leaps of the hare. Compare their speeds:

[Senior Officer 2017 [MCQ] : 2017]

1. 19:18

1

2. 20:19

2

3. 16:15

3

4. 18:17

4
Answer

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