## Compare Ratio Tables

## Work Time

# Compare Ratio Tables

Read the problem. Copy the chart into your Notebook.

Mr. Washington wants to purchase a new paint brush for each of his 32 students. The brushes are in packs of 4. Each pack of 4 brushes sells for $17.

Lucy and Sophie made different ratio tables to solve the problem.

- How much will it cost Mr. Washington to buy paint brushes for all his students?
- Describe the steps that Lucy and Sophie used.
- Explain any mistakes you notice. Write advice so the student does not make the same type of mistake next time.

# Challenge Problem

- How many paint brushes can Mr. Washington buy for $238?

## Hint:

How do you know the steps that Lucy and Sophie used?

What operation is done to the quantities in one column to get the quantities in the next column?

Why is it an error to add 2 to both quantities in a column to get the quantities in the next column?