TEST: Rates, Unit Rates, Proportions

A unit rate is a rate in which the unit in the denominator is:

• 0

• 3

• 1

• 2

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $35 per pound

• $5 per pound

• $0.125 per pound

Alycia earned $20.00 in 4 hours mowing lawns. What is her unit rate in dollars per hour?

• 0.20 hours per dollar

• $5 per hour 

• $6.80 per hour

• $80.00 per hour

A store has 120 customers in 6 hours. What is the unit rate in customers per hour?

• 16 customers per hour

• 12 customers per hour

• 20 customers per hour

• 15 customers per hour

Will spent $3.75 for 3 pounds of granola. What is his unit rate in dollars per pound?

• $.50 per pound

• $1.25 per pound

• $3 per pound

• $2.50 per pound

You're throwing a party, and you ordered 15 pizzas for your guests. Your total came to $97.50. What was your unit cost per pizza?

• $4.95 per pizza

• $5.75 per pizza

• $7.25 per pizza

• $6.50 per pizza

Which is the better buy? A 12-pack of Pepsi for $3.50 or a 6-pack for $1.80?

• The 12-pack

• The 6-pack

What is a proportion?

• When two ratios can be simplified

• When two ratios/fractions are equivalent (equal)

• When two ratios have the exact same numbers

• When two ratios can be multiplied by 2

Are the fractions equivalent?

• Yes

• No

Solve for x please

• x  = 3

• x = -9

• x = 9

• x = 1/3