Question

How do we express the ratio `1:3.75` as a ratio of whole numbers?

Answer 1

`1:3.75=4:15`

Explanation:

Ratio is generally with whole numbers, but here we have one number as `3.75`, which is a mixed fraction in which we have `0.75` as fractional part.

In ratios if we multiply by a common number, it remains same. Hence, let us multiply by a number which makes it whole.

It is apparent that if we multiply `0.75` by `4`, it becomes whole.

Hence `1:3.75`

= `1×4:3.75×4`

= `4:(12+0.75×4)`

= `4:(12+3)`

= `4:15`