Write & solve proportions

Identify all the proportions that could be written for the situation above.

•  $\frac{2}{6}=\frac{1}{n}$  

•  $\frac{1}{6}=\frac{2}{n}$  

•  $\frac{n}{6}=\frac{1}{2}$  

•  $\frac{2}{1}=\frac{6}{n}$  

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CCSS.7.RP.A.2A

The county requires 2 teachers for every 45 students. Which proportion give the number t of teachers needed for 315 teachers.

• $\frac{45\ students}{2\ teachers}=\frac{t}{315\ students}$

• $\frac{2\ teachers}{45\ students}=\frac{t}{315\ students}$

• $\frac{45\ students}{t}=\frac{2\ teachers}{315\ students}$

• $\frac{315\ students}{2\ teachers}=\frac{t}{45\ students}$

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CCSS.7.RP.A.3

Solve the proportion:

 $\frac{2}{3}=\frac{a}{15}$  

(a)  

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CCSS.7.RP.A.2B

Identify the proportion that could be used to represent the table.

•  $\frac{w}{8}=\frac{21}{12}$  

•  $\frac{w}{21}=\frac{12}{8}$  

•  $\frac{8}{12}=\frac{21}{w}$  

•  $\frac{21}{8}=\frac{w}{12}$  

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CCSS.7.RP.A.2C

Two packages of blueberries costs $3. Write a proportion that gives the number of packages p can you buy for $9.

Identify all the proportions you could use to represent the situation:

• $\frac{3\ dollars}{2\ packages}=\frac{9\ dollars}{p}$

• $\frac{3\ dollars}{9\ dollars}=\frac{2\ packages}{p}$

• $\frac{p}{9\ dollars}=\frac{2\ packages}{3\ dollars}$

• $\frac{3\ dollars}{p}=\frac{9\ dollars}{2\ packages}$

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CCSS.7.RP.A.2C

Solve the proportion.

 $\frac{4}{7}=\frac{44}{m}$  

(a)  

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CCSS.7.RP.A.2B

Chase makes $65 for 3 hours of work. Write a proportion to determine how many hours h Chase worked when he made $150.

•  $\frac{3}{65}=\frac{150}{h}$  

•  $\frac{65}{3}=\frac{h}{150}$  

•  $\frac{65}{150}=\frac{h}{3}$  

•  $\frac{65}{3}=\frac{150}{h}$  

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CCSS.7.RP.A.2C

Solve the proportion.  $\frac{d}{6}=\frac{72}{48}$  

(a)  

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CCSS.7.RP.A.2B