using systems of equations

Mathematics
Tutor: None Selected Time limit: 1 Day

you pay $22 to rent 6 video games the store charges $4 for new games and $2 for older games how many new games did you get 

Oct 1st, 2015

Thank you for the opportunity to help you with your question!

Let the number of old games be x

Let the number of new games be y

x + y =6---------(i)

The cost of each old game is $2

The cost of each new game is $ 4

2x + 4y=22--------(ii)

Multiply (i) by 2 to get

2x + 2y = 12-------(iii)

Subtract    (ii) and (iii) as below

2x + 4y=22

2x + 2y = 12

---------------------

2y=10

 y=5

 5 new games and 1 old game.



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Oct 1st, 2015

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