hen a number is decreased by 30% of itself the result is 91. Whats the number?

hen a number is decreased by 30% of itself the result is 91. Whats the number?
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1 Answer

?????????? "av itself" ????????????

subtrakt 30%...;yu hav 70% left

so 70% av x=91

or 0.7x=91

so x=91/0.7

x=13-
by

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