481 .
A and B can do a piece of work in 45 days and 40 days respectively. They began to do the work together but A leaves after some days and then B completed the remaining work in 23 days. The number of da

A. | 9 Days | B. | 8 Days |

C. | 6 Days | D. | 7 Days |

482 .
A can do a piece of work in 4 hours ;B and C together can do it in 3 hours,while A and C together can do it 2 hours.How long will B alone take to do it ?

A. | 8 hours | B. | 10 hours |

C. | 12 hours | D. | 24 hours |

483 .
A and B can do a piece of work in 5 days, B and C can do it in 7 days, A and C can do it in 4 days. Who among these will take the least time if put to do it alone ?

A. | A | B. | B |

C. | C | D. | Data inadequate |

484 .
A and B can do a piece of work in 72 days, B and C can do it in 120 days, A and C can do it 90 days. In what time can A alone do it ?

A. | 80 days | B. | 100 days |

C. | 120 days | D. | 150 days |

485 .
A and B can do a work in 8 days, B and C can do the same work in 12 days. A , B and C together can finish it in 6 days. A and C together will do it in :

A. | 4 days | B. | 6 days |

C. | 8 days | D. | 12 days |

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