Equation: 11x=14x-15

(a) Boris is going to buy X copies of a book

Store A charges $_ per copy with no other charges or discounts.

Store B charges $_ per copy and there is a $_ [choose one: shipping charge or a coupon discount]

The total cost with all charges and discounts is [choose one: The same for the two stores, more for store A, or more for store B]

(b) For this equation (and story): x=_