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

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) (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 $. each, and she can get of them

if marie has $, than

the greatest amount of 5-by-7 prints she can receive is

Answer by MathTherapy(10552) (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 = <===== That's the LARGEST number, if she MUST get "4 by 6" also
You can do the check!
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