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11-12-2014
Mathematics

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60% of a number is 90
what is 50%of the same number

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macio06 macio06

11-12-2014

To get the answer we can use proportion
60% -----------90
50% -----------x
Crossmultiply now
50*90=60*x
4500=60x /:60 (divide both sides by 60)
4500:60=x
75=x - its the result

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