Sohail

Intermediate Algebra, (College Level, one course before College Algebra)

Here's my question:
A mail order company charges a fixed fee for shipping merchandise that weighs 1 pound or less, plus an additional fee for each pound over 1 pound. If there shipping charge for 5 pounds is $4.80, and for 12 pounds is $6.20, find the fixed fee and the additional fee.

The larger package is 7 pounds heavier than the smaller package. This additional 7 pounds cost $6.20 - $4.80 = $1.40. What is the additional fee per pound?