The length and breadth of a playground are 80m and 35 m respectively. How long will a boy take to go three times round the field, if he walks at a rate of 1.5m per second
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given,
length L of the playground =80m
breadth b of the playground =35m
let the time taken by the boy =T
distance travelled =perimeter of the playground
=2(80+35)
=2x115
=230m
speed =1.5m/sec
total distance travelled =3x230
=690m
time T =690/1.5
T=460sec=460/60=7.6minutes.
length L of the playground =80m
breadth b of the playground =35m
let the time taken by the boy =T
distance travelled =perimeter of the playground
=2(80+35)
=2x115
=230m
speed =1.5m/sec
total distance travelled =3x230
=690m
time T =690/1.5
T=460sec=460/60=7.6minutes.
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