John walking at 4 Kmph reaches his office 8 minutes late.

John walking at 4 Kmph reaches his office 8 minutes late. If he walks at 6 Kmph, he reaches there 7 minutes earlier. How far is the office from his house?

Quiz

Answer/Solution

3 Km

Steps/Work

Formula = S1*S2/S2-S1 * T1+T2/60
= 4*6/2 * 15/6
= 24/2 * 15/60
= 15/5 = 3 Km
A