Question

What is 80% of 400? show work

Answer 1

of in mathematics means multiplication

80% = 80/100 = 0.8


`0.8 * 400 = \boxed{320}`

80% of 400 is 320.

Answer 2

80% of 400

We can set up a proportion because it makes things more clear.

First, we need to assume that 400 is our '100'. Usually, 100 is our total value.

400/x=100/80
(400/x)*x=(100/80)*x
400=1.25x
400/1.25=x
320=x
x=320

Our final answer: 320