Question

Arun can run hundred metre in 20 second if he competes in the 400 metre race about how many seconds will it take him to run the race​

Answer 1

seconds     Distance traveled

       20                   100

        X                     400

x=400*20/100

X=80

Answer 2

Answer:

Arun need time of 800 seconds to run 400 metre race.

Step-by-step explanation:

We know that: Time = Speed * Distance. So:

T = $20 * 400$

T = $800$ seconds.

Hope, his helps! :)