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

Here are the solutions to the questions stated above:

Always use this formula to find a percentage:

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

^{3} / _{100} = ^{Part} / _{70}

Cross multiply:

3 x 70 = 100 x Part, or

210 = 100 x Part

Now, divide by 100 and get the answer:

Part = ^{210} / _{100} = 2.1

Use again the same percentage formula:

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

^{%} / _{100} = ^{3} / _{70}

Cross multiply:

% x 70 = 3 x 100

Divide by 70 and get the percentage:

% = ^{3 x 100} / _{70} = 4.2857142857143%