Spanish, 19.11.2020 23:30 baaaaaaaagoat6222

3. Bill enters a 30 kilometre race. He runs the first 20km at a speed of x kilometres per hour and the
last 10km 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?

Answers: 2

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3. Bill enters a 30 kilometre race. He runs the first 20km at a speed of x kilometres per hour and...

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3. Bill enters a 30 kilometre race. He runs the first 20km at a speed of x kilometres per hour and thelast 10km at (x-5) kph. His total time for therace 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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3. Bill enters a 30 kilometre race. He runs the first 20km at a speed of x kilometres per hour and the
last 10km 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?