two trains A and B moving from different station x and y towards each other at same time. After crossing to each other, train A after 81 mint and train B after 100 mint reach the station y and x respectively. Find the speed of faster train? If the speed of train A is 60km/hr.

• from the data given,
  A's speed:B's Speed=sqrt(100):sqrt(81)=10:9; So, A is the fastest train.((formula::A's speed:B's speed=sqrt(b):sqrt(a)))
  Ans:Speed of the faster train is 60 km/hr
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