Verified Answer :

taskmasters

In 2/4 minutes the number of
revolutions a CD makes = 58 ½

                                                                                       = 117/2


Then


In 1 minute the number of
revolutions the CD will make = [(117/2)/(2/4) ] 1


=
(117 4)/(2 * 2)


= 117


So it can seen that the CD revolves at the rate of 117 revolutions per minute. I hope this is the answer you were looking for. The procedure for solving this problem is easy for you to understand i hope.

TSO

A CD makes 58 1/2 revolutions in 1/2 minutes.

A CD makes 58.5 revolutions in 0.5 minutes.

Multiply both numbers by 2.

A CD makes 117 revolution in 1 minute.

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