# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 507 - 511 of 1022

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## Question number: 507

### Question

A library has 52 video-tapes that can be checked out. On Monday the librarian counted 17 video-tapes still on the shelf. How many video-tapes were checked out from the library?

### Choices

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

a. | 44 | |

b. | 45 | |

c. | 35 | |

d. | 69 |

## Question number: 508

### Question

The ratio of computers to mobiles in a shop is 6: 5. There are 32 fewer mobiles than computers. What is the total number of mobiles and computers in the shop?

### Choices

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

a. | 192 | |

b. | 160 | |

c. | 352 | |

d. | 215 |

## Question number: 509

### Question

Ram and his mom were baking cupcakes. The recipe calls for one egg for every dozen cupcakes. Ram finds five eggs in his refrigerator and makes a chart to see how many cupcakes he can make.

Eggs | 1 | 2 | 3 | 4 | 5 |

Cupcakes | 12 | 24 | 36 | 48 | - |

What is the missing value in the chart?

### Choices

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

a. | 17 | |

b. | 49 | |

c. | 60 | |

d. | 72 |

## Question number: 510

### Question

Ravi has a total of Rs. 25,000. He spends 20 % of his money on books. How many rupees does he spend on books?

### Choices

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

a. | Rs. 1000 | |

b. | Rs. 5500 | |

c. | Rs. 5000 | |

d. | Rs. 4500 |

## Question number: 511

### Question

In an office, there are 72 employees. The ratio of female to male is 3: 5. How many male are there in the office?

### Choices

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

a. | 45 | |

b. | 40 | |

c. | 50 | |

d. | 37 |