RRB JE Mock Test 2019

1. The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?                (2)

1. 1. 4
2. 2. 8
3. 3. 16
4. 4. 20

2. Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?              (1)

1. 1. 2 : 3 : 4
2. 2. 6 : 7 : 8
3. 3. 6 : 8 : 9
4. 4. 4 : 8 : 9

3. In a mixture 60 litres, the ratio of milk and water is 2 : 1. What quantity of water should be added so that the ratio becomes 1 : 3?             (2)

1. 1. 80 L
2. 2. 100 L
3. 3. 120 L
4. 4. 60 L

4. The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?             (3)

1. 1. 8 : 9
2. 2. 17 : 18
3. 3. 21 : 22
4. 4. Can’t be determined

5. Salaries of Ravi and Sumit are in the ratio 2 : 3. If the salary of each is increased by Rs. 4000, the new ratio becomes 40 : 57. What is Sumit’s salary?                     (4)

1. 1. Rs. 17,000
2. 2. Rs. 20,000
3. 3. Rs. 25,500
4. 4. Rs. 34,000