Question

Rohit takes $4\frac{4}{5}$ minutes to make complete round of a circular park. How much time will he take to make 15 rounds?

Answer 1

Time taken by Rohit to complete one round of the circular park = $4\frac{4}{5}$ min = $\frac{24}{5}$min

∴ Time taken to complete 15 rounds =$\left(15\times \frac{24}{5}\right)$ min
= (3 $\times$ 24) min
= 72 min
= 1 h 12 min [∵ 1 hr = 60 min]

Hence, Rohit will take 1 h 12 min to make 15 complete rounds of the circular park.