# Quantitative - Time and Distance

## Time and Distance Description

1. Speed = ${(\frac{Distance}{Time})}$
2. Time = ${(\frac{Distance}{Speed})}$
3. Distance = ${Speed \times Time}$
4. km/hr to m/sec conversion
X km/hr = ${(X\times\frac{5}{18})}$ m/sec
5. m/sec to km/hr conversion
X m/sec =  ${(X\times\frac{18}{5})}$ km/hr
6. If a man covers a distance at x km/hr and an equal distance at y km/hr.
Then average speed = ${\frac{2xy}{x+y}}$ km/hr
7.If the ratio of speeds of A and B is a: b then time taken to cover distance is b: a
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