The time taken is inversely proportional to the speed
t = k/v
if t = 10, v = 6
10 = k/6
k = 60
when v = 8
t = 60/8 = 7.5 minutes
A man reaches his office from his residence in 10minutes at the rate of 6km per hour.How long will he take if he walks at the rate of 8Km per hour
2 answers
4/3 the speed means 3/4 the time: 7.5 min.