# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 834 - 840 of 931

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## Question 834

### Question

MCQ▾The cost of a note book is twice the cost of a pen. If the cost of a note book is ‘x’ and that of a pen is ‘y’, then a linear equation in two variables to represent is

### Choices

Choice (4) | Response | |
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a. | ||

b. | ||

c. | ||

d. |

## Question 835

## Question 836

### Question

MCQ▾The compound interest on Rs. 100000 at per annum for 2 years 3 months, compound annually is ________

### Choices

Choice (4) | Response | |
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a. | Rs. 51200 | |

b. | Rs. 100000 | |

c. | Rs. 251200 | |

d. | Rs. 151200 |

## Question 837

### Question

MCQ▾If 20 men working 5 hours a day for 10 days can complete a job, how many men working 10 hours a day for 5 days will be needed?

### Choices

Choice (4) | Response | |
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a. | 20 | |

b. | 65 | |

c. | 50 | |

d. | 25 |

## Question 838

### Question

MCQ▾A fan is listed at Rs. 650, with a discount of what additional discount must be offered to the customer to bring the net price to Rs. 452?

### Choices

Choice (4) | Response | |
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a. | ||

b. | ||

c. | ||

d. | Question does not provide sufficient data or is vague |

## Question 839

### Question

MCQ▾Two dice are thrown simultaneously, the odds in favour of getting the sum 5 is________

### Choices

Choice (4) | Response | |
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a. | ||

b. | ||

c. | ||

d. |

## Question 840

### Question

MCQ▾B is the brother of R. J is sister of R. A is brother of B. How is R related to A?

### Choices

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

a. | Brother | |

b. | Brother or Sister | |

c. | Sister | |

d. | Question does not provide sufficient data or is vague |