# 40 percent of 10 Dollars

Using this tool you can find any percentage in three ways. So, we think you reached us looking for answers like: What is 40 (40%) percent (%) of 10 (10)? Or may be: 40 percent of 10 Dollars. See the solutions to these problems just after the percentage calculator below.

See the solutions to these problems just after the percentage calculator below.

## How to work out percentages - Step by Step

Here are the solutions to the questions stated above:

### 1) What is 40% of 10?

Always use this formula to find a percentage:

^{%} / _{100} = ^{Part} / _{Whole} replace the given values:

^{40} / _{100} = ^{Part} / _{10}

Cross multiply:

40 x 10 = 100 x Part, or

400 = 100 x Part

Now, divide by 100 and get the answer:

Part = ^{400} / _{100} = 4

### 2) 40 is what percent of 10?

Use again the same percentage formula:

^{%} / _{100} = ^{Part} / _{Whole} replace the given values:

^{%} / _{100} = ^{40} / _{10}

Cross multiply:

% x 10 = 40 x 100

Divide by 10 and get the percentage:

% = ^{40 x 100} / _{10} = 400%