Time, Speed & Distance

Universal Formule of T.S.D

What is a ‘D/S/T’ Word Problem?

  • Distance, Speed, Time 
  • Usually, involve something/someone moving at a constant or average speed.
  • Out of the three quantities (speed/distance/time), we are required to find one. 
  • Information regarding the other two will be provided in the question stem.

The ‘D/S/T’ Formula: Distance = Speed x Time


Relative Speed 

  • When two different bodies moving in the opposite directions at speeds S1 and S2, 

Then, Speed would be S1+S2.

  • Likewise, When two different Object moving in same directions, Then, Speed would be S1-S2


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