| Time & Work |
|---|
Work from DaysIf A can do a piece of work in n days, then A's 1 day's work = 1/n. |
Days from WorkIf A's 1 day's work = 1/n. Then A can finish the work in n days. |
| When man A is twice as good man B in work. Ratio of work done by A and B = 2 : 1 Ratio of times taken by A & B to finish a work = 1 : 2 |
| Time & Distance |
|---|
| Speed = Distance/Time |
| Time = Distance/Speed |
| Distance = Time x Speed |
| When man A travels certain distance in x km/hr and man B in y km/hr. Then the average speed = [2xy/x+y] km/hr |
OmniGuru