Increasing x by y% gives 12. Decreasing x by y% gives 8. Deteremine the value of x.

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- Jan 10th 2009, 07:35 PMmath123456combining functions question 4
Increasing x by y% gives 12. Decreasing x by y% gives 8. Deteremine the value of x.

- Jan 10th 2009, 07:57 PMSoroban
Hello, math123456!

I don't see how this relates to "combining functions."

It is straight algebra . . .

Quote:

Increasing by % gives 12.

Decreasing by % gives 8.

Deteremine the value of

We have: .

Add [1] and [2]: .