2003年AMC12竞赛B第4题 2003年AMC10竞赛B
$$2003-AMC10B-8$$  Moe uses a mower to cut his rectangular $$90$$-foot by $$150$$-foot lawn. The swath he cuts is $$28$$ inches wide, but he overlaps each cut by $$4$$ inches to make sure that no grass is missed. he walks at the rate of $$5000$$ feet per hour while pushing the mower. Which of the following is closest to the number of hours it will take Moe to mow his lawn?  Moe 使用割草机修剪 90 英尺 x 150 英尺的长方形草坪。 他切割的条带宽度为 28 英寸，但他将每个切割条重叠 4 英寸以确保不会遗漏任何草。 他一边推着割草机，一边以每小时 5000 英尺的速度行走。 以下哪一项最接近 Moe 修剪草坪所需的小时数？
课内体系->知识点->函数的应用->函数的实际应用->一次函数模型 美国AMC10/12->Knowledge Point->Geometry->Calculation of Plane Geometry->Quadrilateral
Since the swath Moe actually mows is $$24$$ inches, or $$2$$ feet wide, he mows $$10000$$ square feet in one hour. His lawn has an area of $$13500$$, so it will take Moe $$1.35$$ hours to finish mowing the lawn. Thus the answer is $$\boxed{(\text{C})1.35}$$． 