Question

A university bookstore recently sold a wirebound graph-paper notebook for $1.64, and a college-ruled notebook for $1.17. At the start of spring semester, a combination of 50 of these notebooks were sold for a total of $66.02. How many of each type were sold?
(Points : 8)

Answer 1

Solve the following for gp and cr:
gp*1.64 + cr*1.17 = 66.02
gp + cr = 50\[\{\text{gp}\to 16.,\text{\cr}\to 34.\} \]