anonymous
  • anonymous
It takes eight hours for a 600 km journey, if 120 km is done by train and the rest by car. It takes 20 minutes more, if 200 km is done by train and the rest by car. The ratio of the speed of the train to that of the cars is:
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
the question is worded very badly
anonymous
  • anonymous
so distance = speed x time
anonymous
  • anonymous
time = distance / speed

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anonymous
  • anonymous
let the train speed be x, and the car speed be y
anonymous
  • anonymous
The first sentence tells us that (120/x) +(480/y) = 8 { note: all values are in km and hours , therefore when we solve the equations the units of x and y will be km /hr ( not that it matters because they want the ratio
anonymous
  • anonymous
the second sentence tells us that (200 / x ) + 400/ y = 8 1/3 ( note 1/3rd of an hour = 20mintues
anonymous
  • anonymous
then solve them

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