# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 794 - 799 of 1042

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## Question 794

### Question

MCQ▾A ladder 10 meters long reaches a window which is 6 meters above the ground on one side of a street. Keeping its foot at the same point, the ladder is turned to other side of the street to reach a window 8 meters high. The width of the street is ________.

### Choices

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

a. | 12 m | |

b. | 11 m | |

c. | 14 m | |

d. | 10 m |

## Question 795

### Question

MCQ▾The average age of 5 students is 70 years and their ages are in proportion 3: 5: 7: 9: 11, the age of youngest girl is________.

### Choices

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

a. | 30 years | |

b. | 40 years | |

c. | 35 years | |

d. | 10 years |

## Question 796

### Question

MCQ▾Manoj earns 25000 per month. He spends on household items and on education of his children. The amount he saves is________.

### Choices

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

a. | ₹ 10,000 | |

b. | ₹ 6700 | |

c. | ₹ 20,220 | |

d. | ₹ 5370 |

## Question 797

### Question

MCQ▾The ratio of boys and girls in Reena՚s classes is 2: 3. Which of the following ratio is not equivalent to 2: 3?

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 798

### Question

MCQ▾Find the compound interest on ₹ 10,000 in 2 years at 4 % per annum, the interest being compounded half-yearly

### Choices

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

a. | ₹ 825.23 | |

b. | ₹ 885.20 | |

c. | ₹ 824.32 | |

d. | ₹ 800 |

## Question 799

### Question

MCQ▾Sixty- five percent of a number is 21 less than four- fifth of that number. What is the number?

### Choices

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

a. | 140 | |

b. | 160 | |

c. | 100 | |

d. | 150 |