Water and Ratio Problems

Mrs. Asner's lesson focuses on teaching equivalent ratios through various examples. The lesson begins with an introduction to equivalent ratios, followed by practical examples such as making paper mache, calculating earnings from a website design job, creating cornmeal juice for plants, and setting up a fish tank. Each example demonstrates how to use multiplication to find equivalent ratios and emphasizes the importance of maintaining the same ratio values. The lesson concludes with exercises to reinforce the concept of equivalent ratios.

What is the initial ratio of water to flour used in making paper mache?

• 3:4

• 4:5

• 1:2

• 2:3

If you multiply the ratio 2:3 by 4, what is the resulting equivalent ratio?

• 8:12

• 6:9

• 12:18

• 10:15

Javier earns $700 for every 3 pages. How much does he earn for 9 pages?

• $2100

• $3500

• $1400

• $2800

How many pages must Javier complete to afford a $4200 car?

• 18

• 15

• 21

• 12

What is the ratio of cornmeal to water in the cornmeal juice example?

• 4:10

• 3:8

• 2:9

• 1:4

How many cups of cornmeal are needed for 45 gallons of water?

• 14

• 8

• 10

• 12

If Paul has 8 cups of cornmeal, how many gallons of water should he use?

• 44

• 40

• 36

• 32

What is the recommended water-to-fish ratio for a fully grown goldfish?

• 1:10

• 1:12

• 1:14

• 1:16

How many gallons of water are needed for 5 fully grown goldfish?

• 80

• 70

• 60

• 50

In a 40-gallon tank, how many full-grown goldfish can be accommodated?

• 2

• 3

• 4

• 5