Yana and Gupta leave points x and y towards y and x respectively simultaneously and travel in the same route. After meeting each other on the way, Yana takes 4 hours to reach her destination, while Gupta takes 9 hours to reach his destination. If the speed of Yana is 48 km/hr, what is the speed of Gupta?

• since they started at same time;
  ratio of their speeds is inverse square root their times after they meet
  speed of yana:speed of gupta=3:2
  48:speed of gupta=3:2
  speed of gupta=32km/hr
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