142k views
2 votes
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?

User Jhummel
by
6.3k points

2 Answers

3 votes
the answer is 17.5 cups hope this helps

User Tri Noensie
by
6.8k points
2 votes

Answer:

18 cups of water

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)

User Fariya Rahmat
by
7.2k points