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Math quiz for rrb ntpc main and SSC CHSL

1. The ages of Vinay and Vijay differ by 20 years. If 5 years ago, the elder one was 5 times as old as the younger one, what are their present ages?

A. 15 and 35

B. 5 and 25

C. 10 and 30

D. 8 and 28

2. A can do a task in 10 days and B can do the same task in 20 days, with the help of C, they finish the work in 5 days. How long will it take for C alone to finish the task?

A. 30 days

B. 20 days

C. 15 days

D. 18 days

 

 

3. Suresh gains 40% by selling a mobile phone for a certain price. If he sells it at triple the price, the % of profit will be

A. 320%

B. 310%

C. 280%

D. 340%

4. The mean of 9 observations is 18. Four more observations are included and the new mean becomes 19. The mean of four new observations is

A. 21.25

B. 20.25

C. 19

D. 22

5. What will be the maturity value, if Rs. 13,500 is deposited at a simple rate of interest of 12.5% for two years?

A. Rs. 15,187.50

B. Rs. 16,875.00

C. Rs. 16,875.50

D. Rs. 16,785.00

6. The sum of three consecutive numbers is 126. Find the highest number.

A. 41

B. 42

C. 43

D. 44

7. Anil scored 75% on a math test with 60 question. How many question did he answer incorrectly?

A. 10

B. 15

C. 17

D. 20

8. The ratio of the speeds of two trains is 3:4. If the second train runs 300km in 3 hours, then what would be the speed of the first train?

A. 100 km/hr

B. 50 km/hr

C. 70 km/hr

D. 75 km/hr

9. The speed of car B is half the speed of car A. if car A covers a distance of 120km in 1 ½ hours, what is the speed of car B?

A. 40 kmph

B. 60 kmph

C. 30 kmph

D. 50 kmph

10. An article was sold for Rs. 2,400 at a discount pf 20%. Find the selling price, if the discount was 25%

A. Rs. 2,250

B. Rs. 2,000

C. Rs. 1,800

D. Rs. 2,150