1.  In a race of 200 m, A can beat B by 31 m and C by 18 m. In a race of 350 m, C will beat B by:
A. 22.75 m
B. 25 m
C. 19.5 m
D. 7(4 / 7) m

Answer: Option B

Explanation:

A : C = 200 : 182.

C = C x A






B A B



=182x200= 182 : 169.



200169


When C covers 182 m, B covers 169 m.

When C covers 350 m, 

 B covers169x 350m= 325 m.
182


Therefore, C beats B by (350 - 325) m = 25 m.