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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?

Verified Answer :

ayah1

700 ÷ 10 = 70

This means that a heart beats 70 times per minute


70 : 1
140 : ?

70 x 2 = 140

1 x 2 = 2

This means that a heart beat 140 times every 2 minutes

Answer:

Heart can beat 140 times in = 2 minutes .

Rate of heart beat= 70 beat per minute .

Step-by-step explanation:

Given : In 10 minutes a heart can beat 700 times.

To find : At this rate in how many minutes will a heart beat 140 times.

Solution : We have given

Heart can beat 700 times in  = 10 minutes .

Heart can beat 140 times in =  \(\frac{10* 140}{700}\) minutes .

Heart can beat 140 times in = \(\frac{1400}{700}\) minutes .

Heart can beat 140 times in = 2 minutes .

Rate of heart beat  :  \(\frac{140}{2}\) beat per minute.

Rate of heart beat= 70 beat per minute .

Therefore, Heart can beat 140 times in = 2 minutes .

Rate of heart beat= 70 beat per minute .

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