Kidd32 Kidd32
  • 21-07-2017
  • Mathematics
contestada

Palmers average running speed is 3 kilometers per hour faster than his walking speed. If Palmer can run around a 40-kilometer course in 4 hours, how many hours would it take for Palmer to walk the same course?

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irspow
irspow irspow
  • 21-07-2017
r=40/4=10km/hr

w=r-3

w=10-3

w=7km/hr

t=40/7 hr

t=5 5/7 hr

t≈5.714 hr  (to nearest thousandth of an hour...≈5:42:51)
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