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September 18, 2014

September 18, 2014

Posted by **Miranda** on Thursday, May 3, 2012 at 8:40pm.

A. Assign a variable to the unknown quantity.

B. Write an equation you can use to find the unknown quantity.

C. Solve and check the equation you wrote. Show your work.

- Algebra -
**Reiny**, Thursday, May 3, 2012 at 8:51pmnickels --- x

quarters -- 4x

dimes ----- x-2

5x + 25(4x) + 10(x-2) + 15 = 580

solve for x, then sub back into my definitions

- Algebra -
**Miranda**, Thursday, May 3, 2012 at 9:19pmUsing that equation it comes up to $5.70 not $5.80..?

- Algebra -
**Reiny**, Friday, May 4, 2012 at 12:01amIn that case your question is flawed.

since x must come out to a whole number ....

5x + 25(4x) + 10(x-2) + 15 = 580

5x + 100x + 10x - 20 + 15 = 580

115x = 585

x = 5.08...

so there is no solution.

Check your typing

- Algebra -
**Miranda**, Friday, May 4, 2012 at 12:56amThanks. Typing is correct .. Question is flawed. Will let teacher know. Appreciate your help!

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