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BartSMP [9]
3 years ago
14

30%of what number is 9 find the whole

Mathematics
2 answers:
likoan [24]3 years ago
8 0
We can set up a proportion to find the answer.

\frac{9}{x} = \frac{30}{100}

Cross multiply

9(100) = 30x

Solve for x

x =  \frac{900}{30}

x = 30

So 9 is 30% of 30.

The answer is 30.
satela [25.4K]3 years ago
5 0
Line up % with % and number with number

30% is 9
100% is ?

Those numbers are in proportion so we can cross multiply to find the missing part of the proportion.

?=100•9/30=30

So 30% of 30 is 9
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