There is two 72 inch shelves. Each toy box is 8 inches. There are 4 toy boxes in each carton. How many cartons fit on 2 shelves?

Question

You want to order dolls to fill two shelves in the store. Each shelf is 72 inches long. Each doll comes in an 8 inch box. There are 4 boxes in one carton. How many cartons will be needed to fill two shelves?

Answer 1

Let's start by measuring each carton:

8 ⁱⁿ/_toybox * 4 ^toyboxes/_carton = 32 ^inches/_carton

 

72 ⁱⁿ/_shelf ÷ 32 ⁱⁿ/_carton = 2.25 ^carton/_shelf

Since we can't have part of a carton, we round down to 2

 

2 ^cartons/_shelf * 2 shelves = 4 cartons 

 

So 4 cartons in all.