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What is 15.5 percent of 20?

15.5 percent of 20

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Solution for 'What is 15.5% of 20?'

In the following example, consider that:

Solution Steps

The following question is of the type "How much X percent of W", where W is the whole amount and X is the percentage figure or rate".

Let's say that you need to find 15.5 percent of 20. What are the steps?

Step 1: First determine the value of the whole amount. We assume that the whole amount is 20.

Step 2: Determine the percentage, which is 15.5.

Step 3: Convert the percentage 15.5% to its decimal form by dividing 15.5 by 100 to get the decimal number 0.155:

15.5100 = 0.155

Notice that dividing by 100 is the same as moving the decimal point two places to the left.

15.5 → 1.55 → 0.16

Step 4: Finally, find the portion by multiplying the decimal form found in the previous step by the whole amount:

0.155 x 20 = 3.1 (answer).

The steps above are expressed by the formula:

P = W × X%100

This formula says that:

"To find the portion or the part from the whole amount, multiply the whole by the percentage, then divide the result by 100".

The symbol % means the percentage expressed in a fraction or multiple of one hundred.

Replacing these values in the formula, we get:

P = 20 × 15.5100 = 20 × 0.155 = 3.1 (answer)

Therefore, the answer is 3.1 is that 15.5 percent of 20.

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