Mathematics, 19.11.2020 23:30 jordan8037

bill enters a 30 kilometer race. He runs the first 20km at a speed of x kilometers per hour and the last 10 km at (x-5) kph. His total time for the race was 4 hours

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bill enters a 30 kilometer race. He runs the first 20km at a speed of x kilometers per hour and the...

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