# maths

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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 -

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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