A Review of Algebra

by Romeyn Henry Rivenburg

9. Solve

10. How much water must be added to 80 pounds of a 5 per cent salt solution to obtain a 4 per cent solution? (Yale.)

Reference: See Complex Fractions, and the first part of the chapter on Fractional Equations in any algebra.

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FRACTIONAL EQUATIONS

1. Solve for each letter in turn

2. Solve and check: