annyah20051 annyah20051

07-11-2016
Mathematics

contestada

in ten minutes a heart can beat 700 times.At this rate in how many minutes will a heart beat 140 times

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TisITheStudent TisITheStudent

07-11-2016

A heart will beat 140 times in two minutes

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hassanshahzaib8 hassanshahzaib8

07-11-2016

you can do this with ratio method

10 mins : 700 times
x : 140 times

cross multiply and then solve it algebraically
such as 10 * 140 = 700x

10*140/700 = x

2 = x

in 2 minutes the heart beat 140 times.

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