Question

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

Answer 1

the answer will be 1,866.7

Answer 2

Given :- length is 80 m .
breadth is 35 m.
Find :- time taken for three rounds at the speed of 1.5 m/s.

Solution :-
Perimeter is 2* (l+b)
is 2* (80+35)
is 2*115
is 230 m
Distance covered in 3 rounds is 3* 230 is equal to 690 m

Time taken is Distance / speed
is 690 / 1.5
is 46 s.