Bill makes leather shoes. he charges $45 for a pair of women's shoes and $50 for a pair of men's shoes. he sells x pairs of women’s shoes and y pairs of men’s shoes each week and earns a total income of $2,500.

this situation can be represented by the equation 45x + 50y = 2,500 (45 + 50)xy = 2,500 . if bill has no female customers during a particular week, he needs to sell 45 50 pairs of men’s shoes to earn his weekly income of $2,500.

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