Understanding and applying equivalent ratios

Arlinda, Bernice and Camelia share a sum of $4,720. The ratio of Arlinda's share to Bernice's share is 3:4 and the ratio of Bernice's share to Camelia's share is 5:6. How much money does Camelia get?

• $1,920

• $1,200

• $1,600

• $1,800

Find the value of N.

9:2 = 27:N

Which one is correctly written ratio sentence for the constant in the equation: W = 2c. 

• For every 2 watermelons, there is 1 child.
• W = watermelon and c=children
• For every 2 children, there is 1 watermelon. 
• Every child gets a watermelon.

A board was cut into two pieces whose lengths were in the ratio 2:5. The longest piece was 85 inches. How long was the shortest piece?

• 17

• 85

• 34

• 35

A recipe for one batch of cookies uses 5 cups of flour and 2 teaspoons of vanilla. If you use 20 cups of flour, how many teaspoons of vanilla should you use?

• 3 teaspoons

• 5 teaspoons

• 8 teaspoons

• 10 teaspoons

At a parking lot,

the ratio of people to cars is 3 : 5

If there are 30 people, how many cars are there?

• 35

• 60

• 18

• 50

Find the missing numbers in each number line. The answers are in order of soup, pasta, tuna.

• 40, 12, 24

• 35, 10, 20

• 45, 12, 21

• 40, 10, 19

9. Abby (not Abbie) downloaded pop tunes and hip hop tunes to her computer in the ratio 4:3. She has 36 hip hop tunes. How many more pop tunes does Abby have?

• 12

• 48

• 36

• 18

Ellie and Jamie share marbles in the ratio 3 : 8.

If Ellie gets 12, how many marbles does Jamie get?

• 44

• 8

• 32

• 6

If I have the following ratio, do I need to scale up or down?
1                 2
---  =         ----
3               ?

• up (multiply)
• down (divide)