Posted by **jo** on Thursday, September 8, 2011 at 10:43am.

Amy had 20% more money than John. After she spent 50% of her money, she had $72 less than John. How much money had she left?

- maths -
**Henry**, Saturday, September 10, 2011 at 4:54pm
John has $X.

Amy had X + 0.2X = $1.2X.

1.2x/2 = x - 72,

0.6x = x - 72,

x - 0.6x = 72,

0.4x = 72,

X = $180. = John's Amt.

X - 72 = 180 - 72 = $108 = Amy,s bal.

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