Example: 30% of 90 is what number?
.30 x 90 = N
(note: we changed the percent to
a decimal)
27=N
Therefore the number is 27. |
Example: 30% of what number is 90?
.30 x N = 90
(again, change the percent to a
decimal)
N = 90 ÷ .30
(divide each side by .30)
N = 300
Therefore the number is 300. |
Example: What percent of 90 is 30?
P x 90 = 30
P = 30 ÷ 90
(divide each side by 90)
P = .333
P = 33.3% (change the decimal to a percent) |