Question

Ekta runs around a rectangular park 180m long and 120m wide at the rate of 7.5km/hour . In how much time she will complete 5 rounds?

Answer 1

Perimeter = 2(180+120)=2×300=600m

Speed =7.5km/h= 7.5×5/18=12.5/6 m/s

Time = 5×600/12.5/6
Or = 3000×6/12.5
=240×6
=1440s
=24 min