SOLUTION: marie is going to the camera shop to get 10 pictures reprinted. prints that measure 4 inches by 6 inches cost $.50 each, and prints that measure 5 inches by 7 cost $.75 each. if ma

Algebra ->  Finance -> SOLUTION: marie is going to the camera shop to get 10 pictures reprinted. prints that measure 4 inches by 6 inches cost $.50 each, and prints that measure 5 inches by 7 cost $.75 each. if ma      Log On


   

Question 1141072: marie is going to the camera shop to get 10 pictures reprinted. prints that measure 4 inches by 6 inches cost $.50 each, and prints that measure 5 inches by 7 cost $.75 each. if marie has $7 to spend, what is the greatest amount of 5-by-7 prints she can receive?
PLEASE HELP I HAVE NO IDEA WHAT IM DOING
Found 2 solutions by MathLover1, MathTherapy:
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

since the question is what is the greatest amount of 5-by-7 prints she can receive, disregard prints that measure 4 inches by 6
prints that measure 5 inches by 7 cost $.75 each, and she can get x of them

if marie has $7, than
.75%2Ax=7
x=7%2F.75
x=9.3333
the greatest amount of 5-by-7 prints she can receive is 9

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!
marie is going to the camera shop to get 10 pictures reprinted. prints that measure 4 inches by 6 inches cost $.50 each, and prints that measure 5 inches by 7 cost $.75 each. if marie has $7 to spend, what is the greatest amount of 5-by-7 prints she can receive?
PLEASE HELP I HAVE NO IDEA WHAT IM DOING
Let the number of "5 by 7" reprints be L

Then number of "4 by 6" reprints = 10 - L

Cost of "5 by 7" reprints: .75L

Cost of "4 by 6" reprints: .5(10 - L)

We then get: .75L + .5(10 - L) = 7

.75L + 5 - .5L = 7

.25L = 2

L, or number of "5 by 7" reprints = highlight_green%28matrix%281%2C3%2C+2%2F.25%2C+%22=%22%2C+8%29%29 <===== That's the LARGEST number, if she MUST get "4 by 6" also

You can do the check!