A photographer sells two photo packages as shown.
Package 1 ---- cost is 81
6 1x1 ID photos
3 wallet size photos
Package 2 ---- cost is120
10 1x1 ID photos
4 wallet size photos
How much does a 1x1 ID photo cost? A wallet size photo?

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  1. Given x 1x1 and y wallets,

    6x+3y = 81
    10x+4y = 120

    1x1 costs 6
    wallet costs 15

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    posted by Steve
  2. Yes! I got the same answer. Thanks.

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