A truck driver drove 120 miles in 134 hours. What is the speed of the truck in miles per hour?
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120 divided by (1 and 3/4) =
120 divided by 7/4 =
120/1 * 4/7 =
480 / 7 =
68 and 4/7 mph
CHECK:
480/7 * 7/4 = 120 <--- 480 cancels 4 by factor of 120; 7 cancels
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