Given
You buy 3 pairs of jeans for $35.95 each
get a fourth pair for free.
Find out the cost of per pair of jeans
To proof
As given in the question
You buy 3 pairs of jeans for $35.95 each
Total cost of the jeans = 3 ×35.95
= $ 107.85
As given in the equation
get a fourth pair for free
than total pair of jeans becomes 4.
cost of per pair of jeans is $ 26.96 .
Hence proved