Question

the length and breadth of a playground are 80 m and 35 M respectively how long will a boy take to go three times on the field if he walks at the rate of 1.5 m per second



please answer with solution

Answer 1

perimeter of playground =2 (length +breadth )
= 2 (80+35)
=230 m
a boy takes three times the perimeter for walking.
therefore
total distance covered by boy =230×3
=690 m
time =distance /speed
time =690/1.5=460 seconds=7.6 minutes