Worksheet Solutions

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2.112.2
Rafes, Raffos, and Proportions
1
Class
/ Application of Proportions
. The ratio
of freshman to sophomores in a drama club
is 5:6. There are 18 sophomores in the drama club.
How many freshmen are there?
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Find each unit rate.
3. Sal washed 5 cars in 50 minutes.
2. Four pounds of apples cost $1.96.
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4. A giraffe can run 32 miles per hour. What is this
speed in feet per second? Round your answer
to the nearest tenth.
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Solve each proportion.
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10
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48
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Sam is building a model of an antique car. The scale of his
model to the actua! car is 1:10. His model is
How lons is the actua! car?
9.
b+4
+( a++) = qb
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fux=
3o
30
8v = t+o
32
-:43
181
inches Iong.
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The scale on a map of Virginia shows that 1 centimeter
represents 30 miles. The actual distance from Richmond,
VA to Washington, DC is 1 10 miles. On the map, how many
centimeters are between the two cities? Round your answer
to the nearest tenth.
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lilus 30 - lto
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10 . A utility worker is 5.5 feet tall and is casting a shadow
4 feet long. At the same time, a nearby utility pole casts
a shadow 20 feet long. Write and solve a proportion
find the height of the utility pole.
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Mifflin Harcourt Publishing Company
Holt McDougal Coordinate Algebra
Class
Date
Find the value of x in each diagram.
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5cm
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a
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x
1x= l3s
bBT5 -
Find each unit rate.
13. An ostrich can run 174feet in 3 seconds.
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14. lt costs $6.30 to mail a 6-pound package.
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16. Doug makes $43.45 i@urs.
15. Thirty textbooks weigh 144 pounds.
$+3.+5.
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17
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Eric read 150 pages in one hour.
What is Eric's reading rate in pages per minute?
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)Iorues,
I rrr
= 4.5
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18.A cell phone company found that 15 of their phones sold
in June were defective. The company sold 250 phones in
June. How many of the 300 phones sold in July should they
expect to be defective?
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W-
4x
a-
3.5o
Find each unit rate.
19 . A peregrine falcon flew 16 miles in 5 minutes.
What is this speed in feet per second? Round your
answer to the nearest tenth.
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Mifflin Harcourt Publishing Company
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Holt McDougal Coordinate Algebra
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