# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 831 - 836 of 1042

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## Question 831

### Question

MCQ▾Dishant gets 2 marks for each correct answer and loses 1 marks for each wrong answer. He attempts 60 problems and obtains 15 marks. The number of problem solved correctly is________.

### Choices

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

a. | 25 | |

b. | 21 | |

c. | 18 | |

d. | 10 |

## Question 832

### Question

MCQ▾If students of a class of strength 90 are girls, then number of boys equals________.

### Choices

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

a. | 10 | |

b. | 40 | |

c. | 50 | |

d. | 30 |

## Question 833

### Question

MCQ▾Vimal is traveling at an average rate of 40 miles per hour. How far does he travel in 1 hours?

### Choices

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

a. | 100 miles | |

b. | 50 miles | |

c. | 60 miles | |

d. | 20 miles |

## Question 834

### Question

MCQ▾The average age of 4 boys is 25 years and their ages are in proportion 1: 2: 3: 4, the age of youngest girl is________.

### Choices

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

a. | 4 years | |

b. | 10 years | |

c. | 9 years | |

d. | 5 years |

## Question 835

### Question

MCQ▾Two pens and three pencils cost Rs. 80. Four pens and a pencils cost Rs. 112. Find the cost of the pen.

### Choices

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

a. | 11 | |

b. | 25 | |

c. | 30 | |

d. | 35 |

## Question 836

### Question

MCQ▾The total area of a semicircle and a rectangle is equal to 177 sq. cm. The diameter of the circle is 14 cm and the length of the rectangle is 20 cm. The perimeter of a rectangle is________.

### Choices

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

a. | 60 cm | |

b. | 40 cm | |

c. | 50 cm | |

d. | 55 cm |