anonymous
  • anonymous
Ben and Chris start at the same time from places 96 miles apart to cycle toward one another, Ben at 16 mi/h and Christ at 12 mi/h. If Ben rests for 30 minutes on the way, after how many hours will they meet?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
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dumbcow
  • dumbcow
d = r*t --> 16(t-.5) + 12t = 96 28t -8 = 96 28t = 104 t = 3.714
anonymous
  • anonymous
i think we should not subtract 0.5 but add, since it's part of the travel. . ?

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anonymous
  • anonymous
Is it?
anonymous
  • anonymous
|dw:1328417190484:dw| rest is part of the travel. even Ben is resting for 30 mins. , Chris is still moving. . therefor, the rest is still part of travel..
dumbcow
  • dumbcow
No its "t-0.5" because Ben is traveling 30 min less than Chris Chris is traveling 12 mph for t hours Ben is traveling at 16 mph for (t-.5) hours If he did not stop for 30 min, it would take longer for them to meet not shorter
dumbcow
  • dumbcow
**oops "If he did not stop for 30 min, it would take longer for them to meet not shorter" i meant If he did not stop for 30 min, it would take shorter for them to meet not longer
anonymous
  • anonymous
the speed is constant. . even though ben is resting, chris is still moving. therefor rest is still part of travel
dumbcow
  • dumbcow
think of it this way, if Ben had not stopped he would have gone farther right 16(t-.5) < 16t < 16(t+.5) we want the situation where Ben has traveled less distance not more

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