Question

Walking at 3/4 of his usual speed ,a man is late by 1/2 hr. The usual time is?

Answer 1

Answer:

THE ANSWER IS 1.5 HRS.

Explanation:

Let t be the usual time taken and u be the speed

the distance covered will remain the same

so x=ut

when speed becomes 3/4u and time becomes (t+1/2)hrs

x=3/4u(t+1/2)

then ut=3/4u(t+1/2)

t=3/2 hrs