10 is 20% of what number?

1 Answer
MeneerNask
Dec 31, 2016

If we know that 10harr20% then what harr100%

Explanation:

10harr20%=Xharr100%, or:

10/(20%)=X/(100%)

You may multiply the left part by 1, disguised as 5/5:

(5xx10)/(5xx20%)=X/(100%)->50/(100%)=X/(100%)->X=50

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