Time & Work |
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## 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 |
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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 |

Sat, 25 May

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