Question

Doris uses 8 square pieces of fabric to make one scarf.Each side of a square piece of fabric is 1/4 foot in length.Doris can buy large pieces of fabric that are 1/4 foot long and 2 feet wide.How many large pieces of fabric should she buy to make 7 scarves?

Answer 1

7 pieces

Explanation:

Given that,

length of square pieces of fabric = 1/4 foot

Doris used 8 of these piece so total fabric used

8 (l²)

= 1/2 foot²

1 scarf area = 1/2 foot²

7 scarf area = 7* 1/2 foot²

= 7/2 foot²

When Doris uses piece of fabric that is 1/4 by 2 foot

area of one piece of that fabric = 2 * 1/4

= 2/4

= 1/2foot²

So,

number of pieces required to make 7 scarfs = (7/2) / (1/2)

= 7 pieces