Nagma runs around a rectangular park 180 m long and 120 m wide at tye rate of 7.5 km/hour .In how much time will she complete five rounds?
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Length of rectangular plot (l)
= 180 m
Breadth of rectangular (b)
= 120 m
Perimeter = 2 (l + b)
= 2 (180 + 120) m
= 2 (300)
We get,
= 600 m
Distance travelled in 5 round
= 600 × 5
= 3000 m i.e
= 3 km
Given speed
= 7.5 km/hr
Time taken
= (3 / 7.5) h
= {(3 × 10) / 75} h
= (30 / 75) h
We get,
= (2 / 5) h
= (2 / 5) × 60
= 2 × 12
= 24 minutes
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