manasi's heart beats 145times in 2 mins.about how many times does it beat 30 minutes
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Since 30 = 15*2.It will be 15x145 = 2175
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In 2 minutes the heart beats 145 times.
I'm doing this by unitary method.
In 1 minute the heart beats 145/2 times
In 30 minutes it beats (145/2 x 30) times
=145 x 15
= 2175
Therefore Manasi's heart beats 2175 times in 30 minutes.
I'm doing this by unitary method.
In 1 minute the heart beats 145/2 times
In 30 minutes it beats (145/2 x 30) times
=145 x 15
= 2175
Therefore Manasi's heart beats 2175 times in 30 minutes.
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