Question

A child jumping rope can jump at a speed of 280 revolutions every 2 minutes. What is the number of revolutions the child can jump in 3.5 minutes?

Answer 1

490

Explanation:

280/2=140

140/minute

140/3.5=490

also that means 2.33333 jumps per second

Answer 2

490

Explanation:

280÷2 is 140.

The child can do 140 revolutions in a minute.

140 times 3.5 is 490