shawn2565 shawn2565

11-02-2017
Mathematics

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Mary and her brother John collect foreign coins. Mary has three times the number of coins that John has. Together they have 140 foreign coins.

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albe252 albe252

11-02-2017

Mary has 3x coins, John has x coins,
x+3x=140.
4x=140
x=140/4
x=35

John has 35 coins and Mary has 105 coins.

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