Walking at 1/3th of its usual speed a cab is 20mnts late. Find its usual time to cover the journey?	Pick one
A) 10m
B) 15m
C) 20m
D) 25m
E) 12m
New speed = 1/3th of usual speed   New time = 3 of usual time   3 UT - UT = 20m   2UT = 20m   UT = 10m   10mnswer is 10m
<result>A</result>
Walking at 1/3th of its usual speed a cab is 20mnts late. Find its usual time to cover the journey?