Itzjanix Itzjanix

24-07-2016
Mathematics

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Janet took 3h to drive from Town A to Town B at an average speed of 100km/h. She rested for 30 minutes and traveled to Town C at an average speed of 70km/h for the remaining 2h. Find Janet's average speed for the whole journey.

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Аноним Аноним

24-07-2016

I hope this helps. The average speed is 88km/hour.

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clover0331 clover0331

25-07-2016

Total distance=3*100+2*70=440km

Total time taken=3+0.5+2=5.5hr

Average speed=440/5.5=80km/hr

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