Name: Date:

Question 1: 5 builders can build a wall in 33 days. How long would it take 11 builders to build the same wall? |

Question 2: 4 servers can serve 28 guests at a banquet. How many guests could 13 servers serve? |

Question 3: 6 volunteers can remove all the litter from a street in 40 minutes. How long would it take 10 volunteers to clear the same street? |

Question 4: 3 painters can paint a room in 128 minutes. How long would it take 16 painters to paint the same room? |

Question 5: 12 robots can weld 36 sheets of metal in 252 seconds. How long would it take 16 robots to weld 112 sheets of metal? |

Question 6: 5 teachers can mark 13 exam papers in 26 minutes. How long would it take 12 teachers to mark 24 exam papers? |

Question 7: 5 computers can perform 60 billion calculations in 15 seconds. How many calculations can 9 computers perform in 90 seconds? |

Question 8: 9 cats can catch 43 rats in 42 days. How long would it take 14 cats to catch 258 rats? |

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# Answers

Question 1: 15 days |

Question 2: 91 guests |

Question 3: 24 minutes |

Question 4: 24 minutes |

Question 5: 588 seconds |

Question 6: 20 minutes |

Question 7: 648 billion calculations |

Question 8: 162 days |