Question

Have you heard about marathon races in which people have to
run about 40 kilometres? People run marathons on roads
because the track of a stadium is only 400 metres.
10 rounds of a stadium track = 20 km
So, if you run a marathon on a stadium track, you will have to
complete
rounds!​

Answer 1

Answer:

20 rounds of stadium

Step-by-step explanation:

because 10 round is equal to 20km if you want 40 km you should run absolutely 20 rounds na

Answer 2

Answer:

20 rounds

Step-by-step explanation:

10 round=20km

so,

20rounds=40km