Question

A song lasts 9 minutes what duration of song plays at medium speed of 55%

Answer 1

4 minutes and 57 seconds

Explanation:

First figure out what 55% of 9 is. You can do this by using the following equation:

9 × 0.55

That will get you the decimal 4.95. However, this is not your final answer because "4.95 minutes" doesn't make sense. You have to convert he decimal into minutes and seconds.

You can do this by getting rid of the 4, and only focusing on the 95. There is a total of 100 hundredth in a decimal, but 60 seconds in a minute. You can set up a fraction conversion equation to figure this out

`(95)/(100) = (x)/(60)`

To figure this out, you have to make the denominator in the left fraction 60. You can do this by dividing the fraction
`(95)/(100)` by 5 to get
`(19)/(20)`, then multiplying it by 3 to get
`(57)/(60)`. You use your final numerator to figure out the seconds, to get your answer of 4 minutes and 57 seconds.