Rates and Ratios

Write as a unit rate.  
20 pounds for $4

• 5 lbs./ $1

• 4 lbs./$1

• 1 lbs./$4

• 1 lbs./$5

At a summer camp, there are 40 boys out or 70 campers.  What is the ratio written as a fraction in simplest form?

• 3/7

• 1/2

• 4/7

• 7/10

There are 2 chickens, 4 deer, 3 donkeys and 6 goats are at a petting zoo.  What is the ratio of goats to the total number of animals?

• 5/2

• 9/6

• 6/9

• 2/5

Write as a unit rate.
9 pages in 3 hours

• page/3 hours

• pages/ 1 hour

• pages/ 1 hour

• pages/ 3 hours

What is a Ratio?

• Is a comparison of two quantities 

• A rate with a denominator of one

• It is when the only factor the numerator and denominator share is a one 

• Two decimals that can be multiplied

If a car travels 300 miles on 10 gallons of gas, what is the unit rate of miles per gallon?

• 30 miles/gallon

• 10 miles/gallon

• 20 miles/gallon

• 40 miles/gallon

If you have a 3:2 ratio of cats to dogs and there are 18 cats, how many dogs are there?

• 8

• 10

• 12

• 14

Ashley biked 32 miles in 2 hours. Mike biked 36 miles in 3 hours. How much farther can Ashley bike than Mike in 5 hours if they both continue at the same rate?

• 80

• 60

• 40

• 20

If a printer prints 240 pages in 8 minutes, what is the unit rate of pages per minute?

• 30 pages/minute

• 20 pages/minute

• 40 pages/minute

• 25 pages/minute

A _______ is a comparison of two quanities by division.

• rate

• unit rate

• ratio