Answer:
53 hardback books the store sold
Step-by-step explanation:
Let
the number of hardback books for $8 each be x
the number of paperback books for $5 each be y
Write the system of equation for number of books and amount of money made from selling them.
Sells a total of 88 books and makes $599
x+y = 88
8x+5y = 599
How many hardback books (x) does the bookstore sell?
Find x by solving the system of equations:
x+y = 88 , multiply by -5 to eliminate y
8x+5y = 599
-5x-5y = -440
8x+5y = 599
---------------------, add the two equations
3x = 159, divide on both side of equal sign by 3
x = 53
