Playing Cards

Kara has 2 times more cards than Dana, Dana has 4× less than Mary. Together they have 728 cards. How many cards has each of them?


K =  208
D =  104
M =  416


Solution in text K =

D= M/4
728 = K+D+M

2D-K = 0
4D-M = 0
D+K+M = 728

D = 104
K = 208
M = 416

Calculated by our linear equations calculator.

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