Problema Solution
On ITunes, the album plans sells for $9.99 and the album codes and keys sells for $10.99. Both albums are by Death Cab for Cutie. If total sale o both albums in one month are 836 albums and total revenue of both album is $9059.64, how many of each album were sold?
Answer provided by our tutors
let
x = the number of the album Plans sold
y = the number of the album Codes and Keys sold
total sale of both albums in one month are 836 albums:
x + y = 836
the total revenue of both album is $9059.64:
9.99x + 10.99y = 9059.64
by solving the system of equations:
x + y = 836
9.99x + 10.99y = 9059.64
we find:
x = 128 albums
y = 708 albums
click here to see the step by step solution of the system of equations:
128 from the albums "Plans" and 708 albums from the album "Codes and Keys" were sold.