jodiisbored9821 jodiisbored9821

08-09-2017
Mathematics

contestada

When a number is decreased by 10% of itself, the result is 72. what is the number?

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Аноним Аноним

14-09-2017

use proportion:-

a decrease by 10% means the resulting number is 90% of the original number, so:-

90% is equivalent to 72

So 100% = (100 * 72) / 90 = 80 Answer.

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