What is 21.5% of 400?

We need to find 21.5% of 400.

The word "percent" means "per hundred" or "out of 100".

So 21.5% means 21.5 out of every 100.

To calculate with percentages, we first convert to a decimal.

Divide the percentage by 100:

21.5 ÷ 100 = 0.215

This means 21.5% = 0.215

Now multiply the decimal by the number:

0.215 × 400 = 86

So 21.5% of 400 = 86

You can also think of it as a fraction:

21.5% of 400 = (21.5/100) × 400

= (21.5 × 400) / 100

= 8600 / 100

= 86