neighbors\' connections pass through his house. Then can all of the connections
ID: 3003427 • Letter: N
Question
neighbors' connections pass through his house. Then can all of the connections be made? If so, how? 42. Workers are using mechanical joint pipe to lay a water main for a street. The pipe comes in 18-foot and 20-foot sections, and a designer determines that the water main would require 14 fewer sec- tions of 20-foot pipe than if 18-foot sections were used. Find the total length of the water main. 43. A man living in the Northwest wants to mail a Christmas tree to a friend living in the South. He plans to bundle the tree tightly and pack it in a long box with a square end. The mailing service told him that the length plus the girth of his package cannot exceed 130 inches. If the Christmas tree is 5' 10" tall, what is the maximum width and height for his package? (NOTE: The girth is the distance around the package as shown.) GirthExplanation / Answer
42) Let the number of 18 foot sections used = x. Then the number of 20 foot sections used = x - 14
Since the length would be the same then 18x = 20(x - 14) or 20x - 18x = 280 or x = 140 feet.
Therefore the length of the water main = 18x = 18 * 140 = 2520 ft.
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