RRB NTPC EXAM 2021|PREVIOUS YEAR QUESTIONS

 Mathematics 

1. Divide 7,500 among P, Q and R such that P’s share to Q’s share is in ratio 5: 2 and Q’s share to R’s share is in the ratio 7:13. How much will Q receive?

1) 1,400

2) 3,500

3) 2,600

 4) 7,000

 5) 2,800

 2. A sum of 76 is divided among P, Q and R in such a way that P gets 7 more than that what Q gets and Q gets 6 more than what R gets. The ratio of their shares is

1) 19: 24: 33

2) 32: 25: 19

 3) 32: 24: 20

4) 19: 25: 33

5) 17: 15: 33

3. The ratio of two numbers is 4:5 when the 1st is increased by 20%, and the 2nd is decreased by 20%. The ratio of the resulting numbers is

 1) 4:5

2) 5:4

3) 5:6

4) 6:5

5) 3:5

4. If two times of `A’ is equal to `3’ times of B and also equal to four times of C, then A:B:C is

1) 2:3:4

 2) 3:4:2

3) 4:6:3

4) 6:4:3

5) 4:4:2

5. In a school having roll strength 286, the ratio of boys and girls is 8:5. If 22 more girls get admitted into the school, the ratio of boys and girls becomes

1) 4:3

2) 8:7

3) 10:7

4) 12:7

5) 5:7

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