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If a train 100 m long takes 10 s to cros...

If a train 100 m long takes 10 s to cross a telegraph post, then how much time does it take to cross a bridge of length 100 m (in seconds).

A

12

B

15

C

20

D

24

Text Solution

Verified by Experts

The correct Answer is:
C
20 s
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PEARSON IIT JEE FOUNDATION-RATIO AND ITS APPLICATIONS-CONCEPT APPLICATION (LEVEL 1)
  1. If a person travels 150 km in 5 h, then he travels 180 km inh.

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  2. Distance covered by a car with 45 km/h in 2 h is.

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  3. If a train 100 m long takes 10 s to cross a telegraph post, then how m...

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  4. If six men can do a piece of work in 6 days, then 3 men can do same...

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  5. IF A can do a work in 10 days, then A's one day work is.

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  6. If B can do three-fourth of a work in 3 days, then the time taken to c...

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  7. If A can type 60 letters in a minute and B can type 120 letters in a m...

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  8. If X can do a piece of work in n days, then X's p days' work is.

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  9. Find the value of x, if 80:60 = x:12.

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  10. If x : y=2:3\ a n dy : z=2:3,\ then x : z= 2:3 (b) 3:4 (c) 5:7...

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  11. The cost of 30 mangoes is Rs. 150. What is the cost of 60 mangoes (in ...

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  12. 50% of 150 + 70% of 300 =

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  13. 55% " of " 1000 divide 60% " of " 2000 =?

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  14. If x% of 2000 = 600, then find the value of x.

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  15. Which of the following fractions is equivalent to 16.bar(6)% ?

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  16. Find the value of x, if 4:3 = x^(2):12, (x gt 0).

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  17. If (2)/(5) of 50% of x = 10, find x.

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  18. If x% of (12)/(5)" is " (18)/(25), then find x.

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  19. Which of the following fractions is equivalent to 12.5%?

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  20. If (4)/(7) of 49% of x = 21, then the value of x is .

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