Problema Solution
A university bookstore recently sold a wirebound graph-paper notebook for $2.64, and a college-ruled notebook for $3.61. At the start of spring semester, a combination of 50 of these notebooks were sold for a total of $168.86. How many of each type were sold?
Answer provided by our tutors
let, wirebound = x
ruled = y
x+y = 50;
2.64x+3.61y = 168.86
Solving, y = 38, x=12