Calc Ratios and Rates

Simplify the ratio of
35 : 14

• 5 : 2
• 2 : 5
• 3 : 1
• 35: 14

88 students for 4 classes
How many students per class?

• 22 students per class
• 22 classes per student
• 25 students per class
• 25 classes per student

Which is NOT equivalent to 3:5?

• 15:25
• 9:15
• 21:28
• 30:50

Patrick has 2 black, 3 red, and 5   white toy cars. What is the ratio of red toy cars to all the toy cars? 

• 3:5
• 1:3
• 3:11
• 3:10

In a certain apartment building, the ratio of tenants to cars is 3:5. If there are 30 tenants, how many cars are there?

• 35
• 60
• 18
• 50

What word can be used when writing a ratio?

• a
• be
• to
• and

To make 2 batches of brownies, Ed needs 4 eggs.  How many eggs are needed per batch of brownies?

• 1 egg
• 2 eggs
• 4 eggs
• 8 eggs

A job pays $56 for 8 hours of work.  How much money does the job pay per hour?

• $7 per hour
• $8 per hour
• $6 per hour
• $7.50 per hour

Scale Factor...

• A comparison of two quanitities
• Ratios that are equivalent
• Ratios that you can add or subtract
• Can find if a ratio is equivalent by multiplying or dividing by this.

Mr. Keys made $90 in 5 hours.  What is the unit rate?  

• $18 per hour
• $1 in 18 hours
• $90:5h
• 5 to 90