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 into it ?

A 6

B 8

C 9

D 12

Correct Answer: Option C

Solution: Bus can be carried = 24

Bus already loaded = 18

so, place for buses = 24 - 18 = 6

Now 24 buses = 36 cars 1 bus = 36/24 cars, so 6 buses = (36\( \times \)6)/24 = 9 cars