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(1) A moving sidewalk at an airport moves at a rate of1.8ft/sec . Walking on the

ID: 3095810 • Letter: #

Question

(1) A moving sidewalk at an airport moves at a rate of1.8ft/sec . Walking on the moving sidewalk , camille travels 105 ftforward in the time it takes to travel 51 ft in the oppositedirection . How fast would camile be walking on a nonmovingsidewalk ? (2) A local bus travel 7mph slower than the express . Theexpress travels 90 mi in the time it takes the local to travel 75mi . Find the speed of each bus . (1) A moving sidewalk at an airport moves at a rate of1.8ft/sec . Walking on the moving sidewalk , camille travels 105 ftforward in the time it takes to travel 51 ft in the oppositedirection . How fast would camile be walking on a nonmovingsidewalk ? (2) A local bus travel 7mph slower than the express . Theexpress travels 90 mi in the time it takes the local to travel 75mi . Find the speed of each bus .

Explanation / Answer

(1) A moving sidewalk at an airport moves at a rate of 1.8ft/sec .Walking on the moving sidewalk , camille travels 105 ft forward inthe time it takes to travel 51 ft in the opposite direction . Howfast would camile be walking on a nonmoving sidewalk ? Here's how I would approach this problem: if Camille would have walked 51 ft in the time it took to walk 108ft on the moving sidewalk, that means that the sidewalk moved:108-51 = 54ft. 54ft/1.8ft per sec = 30 seconds. SoCamille was walking at a rate of 51 ft/30 seconds = 1.7 feet persecond.