Question

You brought 9 feet of elastic to make hair ties each hair ties need 3 3/8 inches of elastic how many hair ties can you make

Answer 1

`32\ hair\ ties`

Explanation:

we know that

To make one hair ties is needed 3 3/8 inches of elastic

so

using proportion

Find out how many hair ties can you make with 9 feet of elastic

Remember that

`1\ ft=12\ in`

Convert 9 ft to inches

`9\ ft=9*12=108\ in`

Convert mixed number to an improper fraction

`3(3)/(8)\ in=(3*8+3)/(8)=(27)/(8)\ in`

using proportion

`(1)/((27/8))=(x)/(108)\\\\x=108*8/27\\\\x=32\ hair\ ties`