Question

Nagma runs around a rectangular Park 180 M long

and 120 M wide at the rate of 7.5 km per hour in how much time will see complete 5 rounds

Answer 1

Answer:

Distance=2×300=600*5=3000

speed=7.5*5/18

time=(3000*18)/7.5*5=1440 sec=24 min

Answer 2

Answer:

25 mins

Step-by-step explanation:

First, we will have to calculate the perimeter of the rectangular park i.e

2(l+b). where l=180 and b=120.

Therefore, perimeter of the rectangular field= 2(180+120)=2*300=600m

Next, we will calculate the total distance she has run=  5*600=3000m(because she ran 5 rounds).

Now convert the metres to km - 3000m=3km

Now, if she runs 7.5km in 60min(1hr).

She will run 60/7.5km in 1 min (unitary method).

Therefore, she runs 3km in 60*3/75min= 25mins