Question

what is 30 percent of 70?

Answer 1

Well, 
30%=0.3

70•0.3=21

so 30% of 70 is 21

Answer 2

Let's set up a proportion

$\frac{x}{70} \frac{30}{100}$

Then solve for x:

30 x 70 = 2100

2100/100 = 21

The answer is 21

Hopefully this helps! If you have any more questions or don't understand, feel free to DM me, and I'll get back to you ASAP! :)