Ratio Tables
Proportions
Comparing Rates
Better Buy
Constant of Proportionality
100

The ratio of dogs to cats is 4:5. How many dogs are there if there are 30 cats? 

24 dogs

100

On average a person burns 30 calories running for 3 minutes. How many minutes do they need to run to burn 150 calories.

15 minutes.

100

Barbara's Recipe: 3 tsp. of cocoa mix and 2 cups of milk

Carol's Recipe: 5 tsp. of cocoa mix and 4 cups of milk. 

Who's recipe is more chocolate-y?

Barbara's recipe

100

Which is the better deal?

ShopRite: 2 lbs. of cheese $5.50

Stop&Shop: 5 lbs. of cheese $16.00

ShopRite

100

What is the equation for finding the constant?

k = y / x

200

The ratio of tulips to roses is 12:8. How many tulips are there if there are 60 flowers all together?

36 tulips

200

At the dog park there were 7 small dogs for every 3 big dogs. How many big dogs were there if there were 28 small dogs?

12 big dogs

200

Which paint is darker?

Paint A: 9 oz. of black and 7 oz. of white

Paint B: 5 oz. of black and 3 oz. of white

Paint B

200

Which store has a better price for coffee?

Dunkin: 12 oz. for $3.09

Starbucks 18 oz. for $5.99

Dunkin

200

Find the constant:

x:     1      2      3      4       5

y:     5     10    15     20     25

k = 5

300

If there are 3 bananas for every 9 apples. How many apples are there if there are 48 pieces of fruit?

36 apples

300

On the highway the ratio of cars to trucks is 25:6. How many cars are on the highway if there are 90 trucks?

375 cars

300

Which car gets more miles to the gallon?


Car X: 434 miles with 21 gallons

Car Y: 682 miles with 30 gallons

Car Y

300

Which is the better buy?


3 bags for $45     or     5 bags for $70

5 bags for $70

300

Max jogged 18 laps around the track in 2 hours. How many laps does he jog per hour?

9 laps per hour

400

The ratio of of boys to total students is 20:65. How many girls are there?

45 girls

400

If there are 16 jokers in 4 decks of cards, how many jokers are there in 9 decks?

36 jokers

400

Who is driving faster?

Caleb: 115 miles in 2 hours

Rick: 160 miles in 3 hours

Caleb

400

Which store has the better deal?

Coldstone: 10 oz. for $3.99

Carvel: 12 oz. $4.29

Carvel
400

Is this table proportional? If so, what is the constant of proportionality?

x:   9     12     18     27    30

y:  12    16     24     36    40

Yes; 1.3

500

The ratio of children to adults on the trip is 8:1. How many people are there all together if there are 72 children on the trip?

81 people

500

Henry bought 10 erasers for $6. How many erasers can he buy with $9?

15 erasers

500

Brandon and Cole work at the car wash. On Monday Brandon washed 63 cars in 7 hours and Cole washed 40 cars in 5 hours. Who washed more cars per hour?

Brandon

500

Which drink option has the better value?

Small: 8 oz. for $2.26

Medium: 15 oz. for $4.98

Large: 22 oz. for $5.33

Large

500

What is the constant of proportionality for this table?

Milk (gallons) x :    5         6          8          13

Cost ($) :         7.50     9.00    12.00    19.50

$1.50 per gallon