Walking at 1/3th of its usual speed a cab is 20mnts late.

Walking at 1/3th of its usual speed a cab is 20mnts late. Find its usual time to cover the journey?

Quiz

Answer/Solution

10m

Steps/Work

New speed = 1/3th of usual speed
New time = 3 of usual time
3 UT - UT = 20m
2UT = 20m
UT = 10m
Answer is A