Question

the length and breadth of a playground are 80 metre and the 35 M respectively how long will a boy take to go 3 times around the field if he walks at rate of1.5 per second

Answer 1

Firstly we calculate.... Perimeter of rectangle = 2(l+b)

= 2(80+35)
= 230m
He take around the field 3 times means =
3*230
= 690m

He walk 1.5 per second means he walk 1 meter in 1.5 second.....
so, He take time for around the field 3 times
= 690/1.5
= 460 second

Answer 2

first find the perimeter of rectangle 2(L + b)
2( 80 + 35)
230 m
now multiply
3*230
690 m
so divide
690/1.5
460 second

hope it's useful