optimizing weight of a chemical

In a certain chemical manufacturing process, the daily weight http://edugen.wileyplus.com/edugen/s...=1343849024755 of defective chemical output depends on the total weight http://edugen.wileyplus.com/edugen/s...=1343849024755 of all output according to the empirical formula

http://edugen.wileyplus.com/edugen/s...=1343834633234where http://edugen.wileyplus.com/edugen/s...=1343849024755 and http://edugen.wileyplus.com/edugen/s...=1343849024755 are in pounds. If the profit is http://edugen.wileyplus.com/edugen/s...=1343834633234 per pound of nondefective chemical produced and the loss is http://edugen.wileyplus.com/edugen/s...=1343834633234 per pound of defective chemical produced, how many pounds of chemical should be produced daily to maximize the total daily profit?

Approximate your answer to the nearest integer.

The answer is pounds.