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Posted by on Wednesday, May 12, 2010 at 6:06am.

Mrs Allen spends 3/5 of her money at the grocery store. Next she spends 3/5 of her remaining money at the petrol station. She then has $8.00 left.

I know the answer is$50 but i don't know how to explain it!!!

  • Math - , Wednesday, May 12, 2010 at 6:18am

    You could start by stating the question. Do you want to know how much money she started with? If so, call that amount X. Then do the algebra.

    (2/5)X * (2/5) = (4/25) X = 8

    X = 200/4 = 50

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