Question

What number is 30% of 40? *
13.3
30
12
120

Answer 1

percent means per 100

so 30 percent means 30 per 100, or (30/100)

so we just multiply (30/100) * 40

Answer 2

That doesn't exactly make much since. 30/100 x 40?

Answer 3

yes

what part doesn't make sense?

Answer 4

We need to set up a proportion

Answer 5

To better understand this problem

Answer 6

\(\tt \dfrac{x}{40} = \dfrac{30}{100}\)

Answer 7

30 x 40?

Answer 8

This is the basic formula: $$\Huge x\%=\dfrac{a}{b}$$

Answer 9

have you seen that^ before?

Answer 10

Yes, then divide that by 100

Answer 11

As I like to say:

whenever you see 'of' think of that as multiplication
whenever you see 'is' think of that an equal sign

and change 'what number' to a variable like x

What number is 30% of 40? *

x = 30% * 40

% like I told you in your previous post is over 100 so

x = (30/100) * 40