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Exam 5: Ratio, Proportion, and Percent

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Question 51

Multiple Choice

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Write the rate as a unit rate. -126 miles in 6 hours

A) 132 mi/hr $\mathrm { mi } / \mathrm { hr }$
B) 21 mi/hr $\mathrm { mi } / \mathrm { hr }$
C) 21 mi
D) 756 mi

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Question 52

Multiple Choice

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Write the ratio as a ratio of whole numbers using fractional notation. Write the fraction in simplest form. -96,000 copies to 24,000 copies

A) $\frac { 12 } { 4 }$
B) $\frac { 4 } { 1 }$
C) $\frac { 1 } { 4 }$
D) $\frac { 1 } { 24 }$

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Question 53

Multiple Choice

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Solve. -What number is 34% of 26?

Solve. Round all dollar amounts to the nearest cent, if necessary. -$4830 is compounded daily at 10%. Find the total amount in the account after 5 years. (The compound interest factor is 1.64861.)

Solve. -A $260 watch is on sale at 35% off. Find the discount.

Solve. -Find the simple interest when: Principal = $520, Rate = 10.5%, Time = 9 years

Find the ratio described as a fraction in simplest form. -Find the ratio of the width to the length of the rectangular garden sketched below.

Solve. -What percent of 120 is 37.2?

Write the decimal as a percent. -0.2657

Solve. -The standard dose of medicine for a dog is 5 grams for every 15 pounds of body weight. What is the standard dose for a dog that weighs 65 pounds?

Fill in the blank with one of the words or phrases listed below. Some words may be used more than once. $\begin{array}{lllllll}\text { not equal } & \text { equal } & \text { compound interest } & \text { cross products } & \text { percent } & \text { is } & \text { sales tax } \\\text { unit rate } & \text { ratio } & \text { percent of decrease } & \text { unit price } & \text { base } & \text { of } & \text { amount }\\0.01 & \frac{1}{100} & \text { amount of discount } & \text { proportion } & \text { total price } \\100 \% & \text { rate } & \text { percent of increase } & \text { sale price } & \text { commissio }\\\end{array}$ -In the proportionportion $\frac { x } { 2 } = \frac { 7 } { 16 } , x \cdot 16$ 16 and $2 \cdot 7$ a re called ______.

Fill in the blank with one of the words or phrases listed below. Some words may be used more than once. $\begin{array}{lllllll}\text { not equal } & \text { equal } & \text { compound interest } & \text { cross products } & \text { percent } & \text { is } & \text { sales tax } \\\text { unit rate } & \text { ratio } & \text { percent of decrease } & \text { unit price } & \text { base } & \text { of } & \text { amount }\\0.01 & \frac{1}{100} & \text { amount of discount } & \text { proportion } & \text { total price } \\100 \% & \text { rate } & \text { percent of increase } & \text { sale price } & \text { commissio }\\\end{array}$ -If cross products are______ the proportion is false.

Fill in the blank with one of the words or phrases listed below. Some words may be used more than once. $\begin{array}{lllllll}\text { not equal } & \text { equal } & \text { compound interest } & \text { cross products } & \text { percent } & \text { is } & \text { sales tax } \\\text { unit rate } & \text { ratio } & \text { percent of decrease } & \text { unit price } & \text { base } & \text { of } & \text { amount }\\0.01 & \frac{1}{100} & \text { amount of discount } & \text { proportion } & \text { total price } \\100 \% & \text { rate } & \text { percent of increase } & \text { sale price } & \text { commissio }\\\end{array}$ -______means "per hundred."

Write the decimal as a percent. -0.021

Solve. -Find the sale price when the original price is $52.00 and the discount rate is 31%.

Solve. Round the answer to the nearest cent, if necessary. -A union contract calls for a 6.4% salary increase for all employees. Determine the new salary for a worker who is currently making $28,410.

Translate the question to an equation. Do not solve. -55% of 15 is what number?

Solve. -9.5% of 19,373 is what number?

Solve. -A can of lemonade comes with a measuring scoop and directions for mixing are 8 scoops of mix for every 24 cups of water. How much water is needed to make the entire can of lemonade if there are 40 scoops of mix?

Write the decimal as a percent. -2.00