# 15 percent of 0.5?

### Solution for 'What is 15% of 0.5?'

In all the following examples consider that:

- The percentage figure is represented by X%
- The whole amount is represented by W
- The portion amount or part is represented by P

#### 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 percent of 0.5. What are the steps?

Step 1: first determine the value of the whole amount. We assume that the whole amount is 0.5.

Step 2: determine the percentage, which is 15.

Step 3: Convert the percentage 15% to its decimal form by dividing 15 into 100 to get the decimal number 0.15:

15100 = 0.15

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

15.0 → 1.50 → 0.15

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

0.15 x 0.5 = 0.075 (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 = 0.5 × 15100 = 0.5 × 0.15 = 0.075 (answer)

Therefore, the answer is 0.075 is 15 percent of 0.5.

### Solution for '15 is what percent of 0.5?'

The following question is of the type "P is what percent of W,” where W is the whole amount and P is the portion amount".

The following problem is of the type "calculating the percentage from a whole knowing the part".

#### Solution Steps

As in the previous example, here are the step-by-step solution:

Step 1: first determine the value of the whole amount. We assume that it is 0.5.

(notice that this corresponds to 100%).Step 2: Remember that we are looking for the percentage 'percentage'.

To solve this question, use the following formula:

X% = 100 × PW

This formula says that:

*"To find the percentage from the whole, knowing the part, divide the part by the whole then multiply the result by 100"*.

This formula is the same as the previous one shown in a different way in order to have percent (%) at left.

Step 3: replacing the values into the formula, we get:

X% = 100 × 150.5

X% = 15000.5

X% = 3,000.00 (answer)

So, the answer is 15 is 3,000.00 percent of 0.5

### Solution for '0.5 is 15 percent of what?'

The following problem is of the type "calculating the whole knowing the part and the percentage".

### Solution Steps:

Step 1: first determine the value of the part. We assume that the part is 0.5.

Step 2: identify the percent, which is 15.

Step 3: use the formula below:

W = 100 × PX%

This formula says that:

*"To find the whole, divide the part by the percentage then multiply the result by 100"*.

This formula is the same as the above rearranged to show the whole at left.

Step 4: plug the values into the formula to get:

W = 100 × 0.515

W = 100 × 0.033333333333333

W = 3.3333333333333 (answer)

The answer, in plain words, is: 0.5 is 15% of 3.3333333333333.