Rations Rates and Conversions

Jorge’s printer can print 24 pages in 15 minutes. What is the rate of pages/minutes?

• 15 pages/ 24 minutes

• 12 pages/ 5 minutes

• 24 pages/ 15 minutes

• 15 minutes/ 24 pages

Which is the better buy? a 12 pack of Coke for $3.50 or a six pack of Coke for $1.80? (Hint: find the unit rate of both)

• The 12 pack of Coke

• The 6 pack of Coke

• Neither

• They are the same

If Justin can type 408 words in 4 minutes, what is the unit rate of words to minutes?

• 102 words/1 minute

• 100 words/ 1 minute

• 400 words/ 1 minute

• 412 words/1 minute

Suppose you want to convert kilometers to miles. For your conversion factor, which unit should be in the numerator and which one in the denominator?

• Kilometers in numerator; Miles in Denominator

• Miles in numerator; Kilometers in Denominator

• Meters in numerator; Miles in Denominator

• Miles in numerator; Meters in denominator

Which of the following is the correct set-up to convert 2 qt/min to gal/sec?

Convert 60 ft/s to mi/h. (5280 ft = 1 mi and 3600 sec = 1hr)

• 60 mi/h

• 68 mi/h

• 9.7 mi/h

• 40.9 mi/h

• 3 hours/yard
• 3 yards/hour
• 1/3 hours/yard
• 1/3 yards/hour

Grace drove 28 1/2 miles. She used 1 1/4 gallons of gasoline. What is the unit rate for miles per​ gallon?

• 22 4/5 miles per gallon

• 5/114 miles per gallon

• 22.4 miles per gallon

• 20 miles per gallon

An airplane on autopilot traveled 3,372 km in 4 hours.  What is the unit rate for km per hour?

• 843 km/h

• 843 h/km

• 1/843 km/h

• 1/843 h/km

A jug of juice has 9 cups of pineapple juice and 4 cups of orange juice. Write the ratio of number of cups of pineapple juice to total number of cups of juice in three different ways.

• 9 to 4, 9:4, 9/4

• 4 to 13, 4:13, 4/13

• 9 to 13, 9:13, 13/9

• 9 to 13, 9:13, 9/13