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March 25, 2017

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When Sandy decreased her savings by 75% and Gene increased hers by 40%, they would save $280 each. What were their total savings at first?

  • maths - ,

    100%-75%:$280
    or
    25%:280
    100%:?
    Cross multiply
    Original saving=100%*$280/25%=$1120

    Similarly for Gene,
    100%+40% : $280
    or
    140% : 280
    100% : ?
    Cross multiply
    Original for Gene = 100%*$280/140=$200

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