Discussion of Question with ID = 097 under Distance-and-Time

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Question

Speeds of A and B are in the ratio 7 : 19. What is the ratio of the times that they will take to cover a distance of 100 km?

A

19 : 7.

B

7 : 19.

C

19 : 100.

D

100 : 7.

Soln.
Ans: a

Let the speeds be 7x and 19x. The times they take to cover 100 km are $100/{7x}$ and $100/{19x}$. The ratio would be 19 : 7.


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