Question

A recipe for molding dough calls for flour and salt in a ratio of 2 to 1. If you use 4 cups of flour, how much salt should you use?

2

4

6

8

Answer 1

Do you notice that the flour is twice as much as the salt?

Answer 2

so 8

Answer 3

Or another way to say that is that the salt is half of the flour.
So based on equal ratios we could say that:
\[\frac{flour 1}{salt 1}=\frac{flour 2}{salt 2}\]

Answer 4

so 8

Answer 5

Wow!! So we are going to use more salt than flour???

Answer 6

Adam?

Answer 7

oh 4

Answer 8

I'm calling a time out. This time out will be used for thinking. How does the amount of salt relate to the amount of flour? Is it the same or what?

Answer 9

2

Answer 10

That's better.