Question

In 10 minutes, a heart can beat 700 times. At this rate, in how many minutes will a heart beat 140 times? At what rate can a heart beat?

Answer 1

Heart will beat `140` times in `2` minutes.
Heart beats at a rate of `70` beats per minute.

Explanation:

In `0` minutes heart beats `700` times

hence in `1` minute it will beat `700/10=70` times

and heart will beat `140` times in `140/70=2` minutes