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Write 12.5% as a decimal.

.125

Write 6.5% as a decimal.

.065

Translate the following sentence into an equation: 18 is 44% of what number?

18 = .44n

Translate the following sentence into an equation: 104 is 36% of what number?

104 = .36n

15 is what percent of 85?

15 = 85p

15 = 85p85 85

.17647 = 17.6%

44 is what percent of 120?

44 = 120p

44 = 120p120 120

.3666 = 36.7%

A price change from $44 to $62.

62 - 44 = x 44 100

18 = x 44 100

1800 = 44 xX = 40.9% increase

A price change from $56 to $42.

56 - 42 = x 56 100

14 = x 56 100

1400 = 56 xX = 25% decrease

Weight change from 165 lbs to 122 lbs.

165 - 122 = x 165 100

43 = x165 100

4300 = 165 xX = 26.1% decrease

Weight change from 112 lbs to 132 lbs.

132 - 112 = x 112 100

20 = x112 100

2000 = 112 xX = 17.9% increase

A car salesman was able to sell a car for $14,500. He earned 6% commission on the sale. How much was his commission?

X= 14,500(.06)X = $870

A relator was able to sell a house for $167,500. He earned 5% commission on the sale. How much was his commission?

X = 167500(.05)X= $8,375

Janet earns 8.5% commission on her clothing sales. If she wants to earn $100 commission, how

much must she sell?

100 = .085x

X = $1,176.47

Jack worked his first week at Hershey Park. He earned a total of $162.50.

He was disappointed to see that $20.20 was withheld for taxes. What percent of his check was withheld?

20.2 = 162.5x

X= .124307 = 12.4%

In 2002, the average monthly price for cell phone plans was $78.50. Because of data plans, the cost has increased 44.5% per

month. What is the new average monthly cost?

X = 44.5 78.5 100

100x = 3,493.25X = 34.93

34.93+ 78.50$113.43