Percent Proportion Equation 1 Percent Means of a

Percent Proportion & Equation 1

Percent Means ‘of a hundred’ 2

The Percent Proportion(s) 3 You will use a proportion to solve most percent problems. Remember: the percent will always be related to a hundred.

The Percent Proportion(s) ‘of’ ‘is’ is the number with the word ‘of’ ‘is’ is % = of 100 4 The 100 percent is %always is always on the over bottom. 100. This proportion can be used when dealing with simple percent statements such as: “What is 10% of 100? ” “ 10 is what percent of 100? ” “ 10 is 10% of what number? ”

50 is what percent of 230? Use the proportion. 50 x = 230 100 5 is % = of 100 21. 73913043 or x = 21. 7% Cross multiply to get the 50 is 21. 7% of 230 answer.

What is 85% of 40? Use the proportion. x 85 = 40 100 6 is % = of 100 x = 34 Cross multiply to get the answer. 34 is 85% of 40

25% of what number is 400? Use the proportion. 400 25 = x 100 7 is % = of 100 x = 1600 Cross multiply to get the 25% of 1600 is 400 answer.

What is 175% of 80? Use the proportion. x 175 = 80 100 8 is % = of 100 Cross multiply x = 140 to get the answer. 140 is 175% of 80

19 is 25% of what number? Use the proportion. 19 25 = x 100 Cross multiply to get the answer. 9 is % = of 100 x = 76 19 is 25% of 76

What percent of 256 is 64? Use the proportion. 64 x = 256 100 10 is % = of 100 x = 25% Cross multiply to get the 25% of 256 is 64 answer.

What is 45% of 178? Use the proportion. x 45 = 178 100 11 is % = of 100 Cross multiply x = 80. 1 to get the answer. 80. 1 is 45% of 178

19 is 25% of what number? What percent of 256 is 64? What is 45% of 178? 12

EQUATIONS Find 73% of 22 13

14 Find 28% of 1, 045

15 Find 45% of 871