how to set up the fractions to solve the problem

Question

A storehouse stores 2,160 different inventory items. Of these items, 3/20 are perishable. How many of the inventory items are perishable? Write the answer in simplest form.

Answer 1

First, find a recipe.

Suppose that a recipe calls for ¾cup of sugar, to make 12 cookies.

To double the recipe (making 24 cookies), you will have to multiply ¾ by two to find how much sugar is needed;

to halve the recipe, you will need to calculate ½•¾ (half OF ¾).

 

Get it?