using systems of equations

label Mathematics
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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

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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




 5 new games and 1 old game.

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Oct 1st, 2015

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