# Question #f749d

##### 2 Answers

Since there are 60 seconds in a minute:

Number of minutes x 60 s/min = number of seconds

**Example:**

Convert 75.6 minutes to seconds.

75.6 min x 60 s/min = 4,536 s

Full explanation given

#### Explanation:

Conversions usually have their roots in ratio

Did you know that you can and may write ratios in the format of a fraction. In such a case you must never loose sight of what the relationship is.

Consider the ratio

Fraction format

The thing is; that in this case we also have a link to the fraction side of things as 1 second is

If it is more convenient there is nothing to stop you writing this 'ratio' the other way up.

Fraction format

This is where the term 60 seconds per minute comes from.

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Example: How many seconds are there in 35 minutes

By ratio

So 35 minutes has 2100 seconds

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How do we relate this to algebraic manipulation?

Let

You can cancel units of measurement in the same way you do numbers