Question

plz HELP!!! (using a rate) in 10 minutes a heart can beat 700 times at this rate in how many minutes will a heartbeat 140 times at what rate can a heart beat?

Answer 1

the answer is 2 because 10 =700 and x= 140 x is minutes you are trying to find cross multiply you get 700x=1400 and divide 1400 by 700 and you get 2 

Answer 2

700/10= 70
70 beats per minute
70*2=140
140 beats in 2 minutes