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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?
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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?

User Sadeen Alaa
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2 Answers

7 votes
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 
User Shole
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3 votes
700/10= 70
70 beats per minute
70*2=140
140 beats in 2 minutes
User SandTh
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9.2k points
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