Exercise :: Time and Distance  Important Formulas
 Time and Distance  Important Formulas
 Time and Distance  General Questions
 Time and Distance  Data Sufficiency 1

Speed, Time and Distance:
Speed = Distance , Time = Distance , Distance = (Speed x Time). Time Speed 
km/hr to m/sec conversion:
x km/hr = x x 5 m/sec. 18 
m/sec to km/hr conversion:
x m/sec = x x 18 km/hr. 5 
If the ratio of the speeds of A and B is a : b, then the ratio of the
the times taken by then to cover the same distance is 1 : 1 or b : a. a b 
Suppose a man covers a certain distance at x km/hr and an equal distance at y km/hr. Then,
the average speed during the whole journey is 2xy km/hr. x + y