While working on an assembly line, a woman worker manufactures 15 bases for an instrument and a man worker fixes 12 super structures per hour. How many men and women are needed to assemble 2400 pieces in a day, if they work for eight hours a day?

To assemble 2400 pieces in an eight-hour day, the factory needs 2400 divided by 8, which is 300 structures per hour. Since each man fixes 12 super structures per hour, the number of men required is 300 divided by 12, which equals 25. Each of the 300 pieces requires a base, and each woman manufactures 15 bases per hour, so the number of women required is 300 divided by 15, which equals 20. The factory needs 25 men and 20 women.

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