A is twice as fast as B and B is thrice as fast as C is. The journey covered by B in?
17 mins
18 mins
20 mins
15 mins
Explanation:
speed& ratio
a : b = 2: 1
b : c = 3:1
Time& ratio
b : c = 1:3
b : c = 18:54
(if c covers in 54 min i..e twice to 18 min )
speed& ratio
a : b = 2: 1
b : c = 3:1
Time& ratio
b : c = 1:3
b : c = 18:54
(if c covers in 54 min i..e twice to 18 min )