Question

How is ratio used in everyday life?

Answer 1

A very common use of ratio income spent on food to that on the rest

Example: `("Expenditure for food")/("Total free income-expenditure for food")-> "say " 30/70`

Explanation:

Do not confuse this with a fraction. The total number of 'parts' is 30 on food and 70 on the rest making a total of 100 parts

So as a fraction of total free cash the food as percent is `30/100`

Suppose you had a litre of drink mix that had 15 parts flavouring to 130 parts water.

The total number of parts is `130+15=145`

So as a ratio this would be `("flavouring")/("water") ->15/130`

But as a fraction of the whole it would be
`("flavouring")/("water + flavouring")->15/145`