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March 29, 2015

March 29, 2015

Posted by **jo** on Thursday, September 8, 2011 at 11:00am.

- maths -
**MathMate**, Friday, September 9, 2011 at 11:02pm100%-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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