Question

Karen already owns 3 hair bands, and additional hair bands are priced at 8 for a dollar. How much money does Karen need to spend on new hair bands in order to own a total of 39 hair bands?

Answer 1

Karen needs to spend $4.5 to buy new hair bands.

Explanation:

Given:

Hair bands Karen have = 3

cost of 8 hair bands = $1

Total Hair bands she require = 39

Hence Number of of new hair bands require = Total Hair bands she require - Hair bands Karen have = 39 -3 = 36

we need to find how much money she need to spend to buy new hair bands.

cost of 8 hair bands = $1

Cost of 36 hair bands = money need to spend on hair bands

By using Unitary method we get;

Money spend on new hair bands =
`(36)/(8) = \$4.5`

Hence,Karen needs to spend $4.5 to buy new hair bands.