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Carlos and Maria drove a total of 197 miles in 3.8 hours. Carlos drove the first part of the trip and averaged 55 miles per hour. Maria drove the remainder of the trip and avera…
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Carlos and Maria drove a total of 197 miles in 3.8 hours. Carlos drove the first part of the trip and averaged 55 miles per hour. Maria drove the remainder of the trip and avera…
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Mar 21, 2018
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Carlos and Maria drove a total of 197 miles in 3.8 hours. Carlos drove the first part of the trip and averaged 55 miles per hour. Maria drove the remainder of the trip and averaged 47 miles per hour. For approximately how many hours did Maria drive? Round your answer to the nearest tenth if necessary
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55m/h*(3,8h-Yh)+47m/h*Yh = 197m
55m/h*3,8h - 55m/h*Yh + 47m/h*Yh = 197m
209m - 8m/h*Yh = 197m
8mY = 209m - 197m
8mY = 12m
Y = 12m/8m
Y = 1.5
The correct answer is 1.5 hours.
Hope this helps! ^-^
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Mar 26, 2018
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