Proportions and Conversions

6 sandwiches cost $6.60.  Which equation would help determine the cost of 3 sandwiches ?

•  $\frac{3}{x}=\frac{6.60}{6}$  

•  $\frac{3}{6}=\frac{6.60}{x}$  

•  $\frac{6.60}{6}=\frac{x}{3}$  

•  $\frac{6.60}{3}=\frac{x}{6}$  

Maddy is carrying a 5 liter jug of sports drink that weighs 7.5 kg. She wants to know how many kilograms a 2 liter jug of sports drink would weigh. She assumes the relationship between volume and weight is proportional.

How many kilograms does the 2 liter jug weigh?

(type the number only, no units)

(a)  

 $\frac{2n+5}{3}=\frac{5}{2}$  

If we cross multiply to solve the proportion, the resulting equation would be:

•  $4n+5=15$  

•  $4n+10=15$  

•  $2n+10=15$  

•  $2n+5=2.5$  

A car traveled 500 miles on 25 gallons of gas.

The unit rate is (a)   miles/gal

(enter the number only)

There are 560 calories in 8 ounces of meat, which proportion(s)  would allow  you to determine how many calories there are in 3 ounces of meat? 

(check all that proportions that will work)

• $\frac{560}{8}=\frac{c}{3}$

• $\frac{8}{3}=\frac{x}{560}$

• $\frac{3}{8}=\frac{c}{560}$

• $\frac{560}{3}=\frac{8}{c}$

The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 240 people are in line?

• 32 People
• 32 Min.
• 12.5 Min.
• 12.5 People

Tags

CCSS.7.RP.A.3

An adult elephant that is 8 ft tall casts a shadow that is 4 ft long. Find the height of a statue that casts a 9 ft shadow.

• 36 ft 
• 2 ft 
• 16 ft 
• 18 ft 

Tags

CCSS.7.RP.A.3

How many yards are equal to 252 inches?

• 21
• 12
• 9
• 7

Tags

CCSS.6.RP.A.3D

How many kilograms of calcium are there in 173 pounds of calcium? (1 lb = 454 g; 1 kg = 1000 g)

• 1.10 kg

• 78.5 kg

• 110 kg

• 78500 kg

Tags

CCSS.6.RP.A.3D

How many minutes are in a school year, 187 days?

• 269,280 min.

• 16, 200 min.

• 16, 156 min.

• 269,000 min.