0
72% of 90 = 80
A percent is 1 part out of 100.
1%isequalto
1
100
or0.01.
Proportions can be used to solve percent problems.
part
whole
=
percent
100
solve
The part is 72.
The percent is 90%.
Let n represent the whole.
Write a proportion to solve for n.
72
n
=
90
100
90n = 72 · 100
90n = 7,200
90n ÷ 90 = 7,200 ÷ 90
n = 80
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Continue Learning about Other Math
What number is halfway between 72 and 108?
It is: (72+108)/2 = 90
What percent of 90 is 72?
90% of 72 = 90% * 72 = 0.9 * 72 = 64.8
What number would complete this pattern 107 98 90 83 77 68 65?
72.......107-98(9) 98-90(8) 90-83(7) 83-77(6) 77-[72](5) 72-68(4) 65
What number between 55 and 101 is a multiple of 6 and 9 and 18?
72 and 90
What is the percent increase of 90 to 72?
72 is an increase of negative 20% compared to 90.
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