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Mathematics, 21.07.2019 15:30 jasontbyrer
Abus covered the 400-km distance between points a and b at a certain speed. on the way back the bus traveled at the same speed for 2 hours and then increased the speed by 10 km/hour until it reached a, thus spending 20 fewer minutes on the return trip. how long did the return trip take?
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Abus covered the 400-km distance between points a and b at a certain speed. on the way back the bus...
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