Seudónimo Seudónimo

22-10-2016
Mathematics

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7.5% of what number is 21? Plz explain how to solve

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ericosouki ericosouki

22-10-2016

Hello,

shall we begin?

7.5% of what number is 21:

7.5%........................21
100%.......................x

7.5% * x = 21 * 100
7.5x = 2100
x = 2100/7.5
x = 280

Answer:280

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