# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 521 - 530 of 1042

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## Question 521

### Question

MCQ▾For a group of 15 students food lasts for 50 days. For how many days will the same food last for 75 students?

### Choices

Choice (4) | Response | |
---|---|---|

a. | 25 days | |

b. | 10 days | |

c. | 15 days | |

d. | 20 days |

## Question 522

## Question 523

## Question 524

## Question 525

## Question 526

### Question

MCQ▾The weight of a 12 m long iron rod is 20.5 kg. The weight of 5 m long of such rod will be________.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 8.54 kg | |

b. | 8 kg | |

c. | 9.5 kg | |

d. | 9 kg |

## Question 527

### Question

MCQ▾The weight of a 15 m long iron rod is 25 kg. The weight of 10 m long of such rod will be________.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 18.54 kg | |

b. | 18 kg | |

c. | 16.6 kg | |

d. | 16 kg |

## Question 528

### Question

MCQ▾A can do a work in 8 days. If B is 60 % more efficient than A, then in how many days can B do the same work?

### Choices

Choice (4) | Response | |
---|---|---|

a. | 3.5 | |

b. | 4 | |

c. | 5 | |

d. | 3 |