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What is the number, if 30 percent of the number is 120?

Answer
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Hint: We will use a percentage formula for solving this question. To discover 30% of a number, we take it to be a variable x, and then we find 30% of x and equal it to 120 as per the provided, and then we solve for the value of x.

Complete step by step answer:
We will assume the required number is x.
We have given 30 percent of the number is 120.
So, according to the relation
30%×x=120
30100×x=120
We will multiply both side by 100,
30x=120×100
We have divided whole equation by 30,
x=120×10030
x=400
Hence, the 30% of the 400 is 120.

Note:
The key to solving these sorts of problems is to apply the percentage calculation to an unknown and then equating it to the provided number. If we need to convert a percentage to a decimal, divide it by 100, according to the percentage formula. Students should not get confused between words in percentage problems. In these problems generally “of” stands for multiplication and “is” stands for equal.
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