# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 114 - 120 of 1042

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## Question 114

### Question

MCQ▾If of a number is 20 less than the original number, then the number is_.

### Choices

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

a. | 50 | |

b. | 40 | |

c. | 60 | |

d. | 30 |

## Question 115

### Question

MCQ▾If the angles of a triangle are in the ratio 3: 2: 1, then the difference between the greatest and smallest angles is_.

### Choices

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

a. | ||

b. | ||

c. | ||

d. | 60 |

## Question 116

### Question

MCQ▾A number consists of two digits whose sum is 10. If 18 is added to the number, the digits are interchanged. The number is_.

### Choices

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

a. | 62 | |

b. | 26 | |

c. | 64 | |

d. | 46 |

## Question 117

### Question

MCQ▾The value of for which is_.

### Choices

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

a. | 21 | |

b. | ||

c. | 20 | |

d. |

## Question 118

### Question

MCQ▾The length of a rectangle is 5 m less than three times its breadth. The length and breadth of the rectangle if its perimeter is 150 m, is_.

### Choices

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

a. | 55m, 30m | |

b. | 20m, 50m | |

c. | 55m, 20m | |

d. | 30m, 20m |

## Question 119

### Question

MCQ▾A man is 6 years older than his wife and his wife is now thrice as old as their daughter, who is 10 years old. How old the man when his daughter was born?

### Choices

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

a. | 26 years | |

b. | 20 years | |

c. | 22 years | |

d. | 25 years |

## Question 120

### Question

MCQ▾Solution of the equation is_.

### Choices

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

a. | 5 | |

b. | 9 | |

c. | 10 | |

d. | 3 |