Mathematics, 19.11.2020 23:30 cbogrett

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 a.) Write down an equation in terms of x and solve it.
b.) What are his speeds for the two parts of the run?

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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 last 10 km at (x-5) kph. His total time for the race was 4 hours a.) Write down an equation in terms of x and solve it.b.) What are his speeds for the two parts of the run?

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Another question on Mathematics

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 a.) Write down an equation in terms of x and solve it.
b.) What are his speeds for the two parts of the run?