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发表于 27-5-2013 17:51:37|来自:福建福州
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Daisy had 3/4 as much money as Vijay after spending $25 on a bag.
1. Daisy has $x initially, eg. $100
2. He spent $25 on a bag, so he has $ now as = x - 25, which is 100 - 25 = $75
3. His money is 3/4 of Vijay now, which means Vijay's = ( x - 25 ) * 4 / 3 = 75 * 4 / 3 = $100 |
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