# How much is 4.2 percent of 4/10

Using this tool you can find any percentage in three ways. So, we think you reached us looking for answers like: What is 4.2 (4.2%) percent (%) of 4/10 (4/10)? Or may be: How much is 4.2 percent of 4/10. 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 4.2% of 4/10?

Always use this formula to find a percentage:

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

^{4.2} / _{100} = ^{Part} / _{4/10}

Cross multiply:

4.2 x 4/10 = 100 x Part, or

1.68 = 100 x Part

Now, divide by 100 and get the answer:

Part = ^{1.68} / _{100} = 0.168

### 2) 4.2 is what percent of 4/10?

Use again the same percentage formula:

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

^{%} / _{100} = ^{4.2} / _{4/10}

Cross multiply:

% x 4/10 = 4.2 x 100

Divide by 4/10 and get the percentage:

% = ^{4.2 x 100} / _{4/10} = 1050%

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