Ratios and Rates
More Ratios &Rates
Unit Rates
Proportions
Analyzing
Unit Rates
Unit Rates
100
How many ways can you write a ratio?
3 different ways ( with a :, as a fraction; with the word to)
100
Define Rate.
a comparison of 2 quantities that has two different units of measure.
100
Which example is a unit rate?
A) 5:2 B) 36 feet in 1 yard
C) 45 miles in 1 hour D) 2/14=3/21
C
100
What is the definition of a proportion?
2 equal ratios
100
Write the equation for the table.
y=3x
200
There are 13 dogs for every 9 cats. Write the ratio of cats to dogs in 3 different forms.
9 to 13; 9:13; and
9/13
200
Which of the follow is an example of a rate?
A) 2:3 B) 12 inches per foot
C) $0.32 per oz D) 1/4=5/20
C- a rate must have 2 different units of measure
200
Which type of fruit has a cost of $0.80 per pound?
Bananas
200
Which is an example of a proportion?
A) 5/6 B) $35 per hour
C) 1/5=2/10 D) x/26
C
200
What is the constant of this graph?
k=1.2
300
There are 15 students for every 2 adults. What is the ratio of adults to students?
2 to 15 2:15
2/15
300
Fill in the table.
300
A box of 15 cookies costs $9. What is the cost for 1 cookie?
$0.60 per cookie
300
Solve for x.
5/60=3/x
x=36
300
Write an equation for the graph.
y=5x
400
In the animal shelter there are 25 cats for every 5 dogs. Write the ratio of dogs to cats in simplest form.
1:5 1 to 5 1/5
400
Delilah does 184 jumping jacks in 4 minutes. She does her jumping jacks at a constant rate. How many jumping jacks can Delilah do for 6 minutes?
276 jumping jacks
400
Sydney read 50 pages in 40 minutes. she reads at a constant rate. How many pages can Sydney read per minute?
1.25 pages per minute
400
Solve for x.
x/25=471/15
x=785
400
Mrs. Saboda uses the equation c=16f to make cookies. Where c= # of cookies and f= cups of flour. What is the unit rate in this equation?
16 cookies per cup of flour
500
Write the meaning of the ratio of the number of monkeys to bananas.
For every four monkeys there are five bananas.
500
Nikola buys a bouquet of 8 sunflowers for $18. What is the cost for 9 flowers?
$20.25
500
Find the unit price for each. Which is the better buy?
Choice 1: 7.5 oz for $10.99 or Choice 2 $9.99 for 6 oz
Choice 1 is the better buy because the unit price is $1.47 per oz where Choice 2 is $ 1.67 per oz since it less expensive.
500
A fertilizer manufacturer recommends 4 pounds of fertilizer for every 1,500 square feet of lawn. How many pounds of fertilizer are needed to cover 2,400 square feet of lawn? Round to nearest tenth if needed.
6.4 pounds
500
Here are 3 different boat rental companies. Which company costs the most per hour?
Float a Boat Company is the most expensive at $51.50 per hour.
Toot-Toot = $51 per hour
Full Throttler = $50 per hour