A ferry can carry 24 buses or 36 cars at a time. If there are 18 buses on the ferry,how many cars can be loaded onto it?

A 6

B 8

C 9

D 12

Correct Answer: Option C

if there is 18 buses in the ferry then there is an empty place of (24-18)= 6 buses

here,

24 buses = 36 cars

or,1 buses = 36/24 cars

or,6 buses= (36/24) X 6 =9 cars