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26-01-2018
Mathematics

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25 lbs is % of 121 lbs; 121 lbs is % of 25 lbs

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cdw2014 cdw2014

26-01-2018

Percentage is out of 100, so we can set up a proportion with 25/121 = x/100. Solve for x by cross multiplying.

25*100 = 121x
x = 2500/121 = 20.661%

Do the same thing for the next one.
121/25 = x/100

121*100 = 25x
x = 12100/25 = 484%

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