Proportions and Unit Rates

Which is NOT equivalent to 3:5?

• 15:25
• 9:15
• 21:28
• 30:50

Elijah earn $200 for 8 hours of work. What is the unit rate (in dollars per hour)?

• $50 per hour
• $12 per hour
• $192 per hour
• $25 per hour

Do the ratios form a proportion?

• Yes, they form a proportion.
• No, they do not form a proportion.

Jasmine had a jar of keys:

3 car keys; 4 door keys; 6 padlock keys; and 2 locker keys.

In a box, she had 45 keys. How many were padlock keys?

• 12

• 14

• 18

• 20

The 6th grade class is taking a field trip. There are 150 students for 5 buses. What is the unit rate for students per bus?

• 3
• 30
• ⅓
• 750

Emily is making friendship bracelets for a school fundraiser. It takes 3 hours to make 2 bracelets. How many bracelets can she make in one hour?

• 6 bracelets
• 1½ bracelets
• ⅔ bracelet
• 4 bracelets

Noah swims 1200 yards in 30 minutes. What is his unit rate in yards per minute?

• 40 yards per minute
• 36,000 yards per minute
• 0 .025 yards per minute
• 1/40 yard per minute

Solve for A in the table.

• A= 40
• A= 10
• A= 9
• A= 45

Solve for B in the table.

• B= 40
• B= 10
• B= 9
• B= 45

Hilbert burns 120 calories per 30 minutes of weight training.  Complete the table to chart his calorie expenditure for different amounts of time. What is the value of a?

• a= 80
• a= 6
• a= 60
• a= 120