Problema Solution
A university bookstore recently sold a wirebound graph-paper notebook for $2.15, and a college-ruled notebook for $3.43. At the start of spring semester, a combination of 50 of these notebooks were sold for a total of $134.38. How many of each type were sold?
Answer provided by our tutors
let number of wirebound graph-paper notebook =x
then college-ruled notebook = 50-x
so,
2.15 *x + 3.43(50-x) = 134.38
x=29
wirebound graph-paper notebook=29
college-ruled notebook= 50-29 = 21