Question

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​

Answer 1

Answer:

0.4hours or 24 mins

Step-by-step explanation:

Refer the attached image!!

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Answer 2

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 rounds = 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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