Concept explainers
A Sewing Problem: If 10 workers take 8 hours to sew a store’s order of pants, then how long would 15 workers take to sew the store’s order of pants? Assume all workers work at the same steady rate and all the pants are the same.
a. Is the proportion
appropriate for solving the sewing problem? Why or why not?
b. Explain how to reason about multiplication and division with quantities to solve the sewing problem.
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