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Two truck drivers leave a cafe at the same time, traveling in opposite direction. One truck goes 1 mph faster than the other one. After 4 hours, they are 396 miles apart. How fast is each truck going?

1 answer

speed of slower = x mph
speed of faster = x+1 mph

4x + 4(x+1) = 396
8x = 392
x = 49

etc

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