Question

An athlete runs 400 m race in 50 sec.what is average sped...?

Answer 1

Answer:

28.8kmph

Explanation:

400 M in 50 secs, add 10 secs for a minute, so plus 20% so equals 480 M per minute.

If it were 500 M per minute it would be 30 Kilometres per hour.

480 is 96% of 500 (48 x 2)

One percent of 30 is .3 so 4% is 1.2 so he is running at 28.80 Kms hour