Mr. sims is mixing cement to secure a mailbox post. the directions on the package require 5 cups of water for each pound of cement. mr. sims is mixing 3.5 pounds. how many cups of water will he need?

18 cups of water

Step-by-step explanation:

According to the directions, 1 pound of cement requires 5 cups of water. This is our conversion factor. We can find the cups of water required for 3.5 pounds of cement using proportions.

3.5 pound of cement × (5 cups of water / 1 pound of cement) = 17.5 cups of water ≈ 18 cups of water (rounding off to two significant figures)

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