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# math help?

A container holds 250 mL of a solution that is 20 mL acid. If n mL of a solution that is 60% acid is added, the function

C(n) = 20 + .6n/250 + n

gives the concentration, C, as a function of the number of mL added, n. Express n as a function of C.

### 1 Answer

Relevance

- BryceLv 74 weeks ago
Use parentheses to clearly show what goes where.

C(n) = (20 + 0.6n)/(250 + n)

250C + Cn= 20 + 0.6n

n(C - 0.6)= 20 - 250C

n(C)= (20 - 250C)/(C - 0.6)

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