# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 531 - 534 of 1022

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## Question number: 531

### Question

Mohan has certain amount in his account. He gives half of this to his eldest son and one third of the remaining to his youngest son. The amount left with him now is ________.

### Choices

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

a. | of the original | |

b. | of the original | |

c. | of the original | |

d. | of the original |

## Question number: 532

### Question

The total cost of 2 mirrors and 3 stools is Rs. 1525. If one stool costs Rs. 50 more than one mirror, find the price of each mirror and stool respectively.

### Choices

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

a. | Rs. 265, Rs. 355 | |

b. | Rs. 225, Rs. 375 | |

c. | Rs. 365, Rs. 215 | |

d. | Rs. 275, Rs. 325 |

## Question number: 533

### Question

Each of two groups of tourists has 80 people. If of the first group and of the second group board trains to travel to a hill station, how many more people of the first group board trains than of the second group?

### Choices

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

a. | 28 | |

b. | 25 | |

c. | 32 | |

d. | 21 |

## Question number: 534

### Question

Four bells toll at intervals of 28 seconds, 30 seconds, 36 seconds and 42 seconds respectively. They start ringing together at a particular time. They next toll together after ________.

### Choices

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

a. | 26 minutes | |

b. | 21 minutes | |

c. | 19 minutes | |

d. | 15 minutes |