Posted by **seb** on Wednesday, April 23, 2008 at 7:32pm.

A recipe for cookies calls for 4 eggs. The recipe makes 6 dozen cookies. how many eggs would be need to make 21 dozen cookies?

- Solve the proportion -
**Ms. Sue**, Wednesday, April 23, 2008 at 7:34pm
4 / 6 : x / 21

Cross multiply.

We'll be glad to check your answer.

- Solve the proportion -
**seb**, Wednesday, April 23, 2008 at 7:38pm
63 eggs?

- Solve the proportion -
**Writeacher**, Wednesday, April 23, 2008 at 7:51pm
No, from the proportion, you should see that x will be less than 21, not more.

4/6 : x/21 cross-multiplied ~~> 4*21=6x

Now solve for x. Multiply 4*21 and then divide both sides by 6. What's the answer?

- Solve the proportion -
**seb**, Wednesday, April 23, 2008 at 7:55pm
14 eggs!

- Solve the proportion -
**Ms. Sue**, Wednesday, April 23, 2008 at 7:57pm
Right! :-)

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