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Roberts heart beats about 72 times in 60 seconds . How many times does his heart beat in 15 minutes?

Sagot :

Porshia
1. Do a proportion ( remember that 60 seconds= 1 minute)
72 times/ 1 minute= x times/ 15 minutes
2. Do 72 times 15 which equals 1,080
3. 1,080 divided by 1 equals 1,080
4. Your answer is 1,080 times
Laurencarver
To do it just change 60 seconds to 1 minute then times 72 by 15 which would equal 1080 then your done

To check it just reverse the calculation so do 1080 divide by 15 which should equal 72
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