Penny spent a total of $35.75 on 3 DvD's and a 2 Blu Rays. lf each DvD cost $5.75, how much did each Blu Ray cost?

Question

1367 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-12-02T08:16:10

Each Blu-Ray cost #$9.25#.

We shall represent the DVDs by #x# and the Blu-Rays by #y#. From the data, we can write:

#3x+2y=35.75#

Since we know the value of #x# to be #5.75#:

#(3xx5.75)+2y=35.75#

#17.25+2y=35.75#

Subtract #17.25# from both sides.

#2y=18.50#

Divide both sides by #2#.

#y=9.25#