Problema Solution
A music store is selling compact disc for $11.50 and $7.50 you by 12 discs and spend a total of $110 how many compact discs that cost $11.50 did you buy
Answer provided by our tutors
let
x = the number of $11.50 discs bought
y = the number of $7.50 discs bought
you by 12 discs and spend a total of $110
x + y = 12
11.50x + 7.50y = 110
by solving the above system of equations we find
x = 5 discs
y = 7 discs
click here to see the step by step solution of the system of equations
I bought 5 discs that cost $11.50.