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Susy had 2/3 as much money as Mary at first. After receiving 1/2 of Mary's money, Susy had $210. How much money did Susy have at first

 Feb 9, 2020
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susy: x

mary: y

x=2/3y

x+1/2y=210

therefore

2/3y+1/2y=210

4/6y+3/6y=210

7/6y=210

y=180 (Mary)

x=180*2/3=120 (Susy)

easy peazy

 
 Feb 9, 2020

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