Photocopying. Quick Copy recently charged 49¢ per page for color copies and 7¢ per page for black-and-white copies. If Shirlee’s bill for 90 copies was $11.34, how many copies of each type were made?

Question

anonymous · Answer

49x +7y =11.34
x+y= 90
solve the system :)

anonymous · Answer

i took 0.49 multipled is by 90 is that correct?

anonymous · Answer

because i got 44.1 +6.3=50.4 but im stumped after that

anonymous · Answer

yes sorry about that
.49x +.07y = 11.34

anonymous · Answer

x = 90 - y
substitute into the first equation
.49 (90-y) + .07y = 11.34

anonymous · Answer

im so stumped because i got 50.4

anonymous · Answer

yes I am

anonymous · Answer

ty very much

anonymous · Answer

I apologize I had to leave earlier :(   
Here is the work.

.49 (90-y) + .07y = 11.34
44.1-.49y +.07y=11.34
-.42y=-32.76
y=78

x=12