IBM Aptitude Questions: A is twice as fast as B is thrice as fast as C. The journey covered by C in 42 minutes, what will be covered by A is

1. A is twice as fast as B is thrice as fast as C. The journey covered by C in 42 minutes, what will be covered by A is 

Options:

1. 21 MIN
2. 64 MIN
3. 7 MIN
4. 40 MIN

Answer

C 7 MIN

Explanation:

B is thrice faster than C

Time needed by C to cover a journey = 42 Mins

Time needed by B = C/3 = 42/3= 14

Time needed by A (twice faster than B)= 14/2 = 7 Mins