# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 813 - 817 of 1040

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## Question number: 813

### Question

Amit wrongly answered 30 % of the questions in a chemistry test contained exactly 100 questions. How many of the questions did he answer correctly?

### Choices

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

a. | 40 | |

b. | 60 | |

c. | 50 | |

d. | 70 |

## Question number: 814

### Question

If students of a class of strength 200 are girls, then number of boys equals________.

### Choices

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

a. | 130 | |

b. | 150 | |

c. | 160 | |

d. | 110 |

## Question number: 815

### Question

At 7.00 am, the temperature was -5 F, The temperature was 7 F higher at noon. Which one of the following expression can be used to calculate the temperature at noon?

### Choices

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

a. |
| |

b. |
| |

c. |
| |

d. | None of the above |

## Question number: 816

Appeared in Year: 2012

### Question

The ratio of present ages of Rahul and Deepesh is 3: 5.10 years later this ratio becomes 5: 7. What is the present age of Deepesh?

### Choices

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

a. | 10 years | |

b. | 25 years | |

c. | 15 years | |

d. | 20 years |

## Question number: 817

### Question

Priya goes to a shop to buy a dress costing Rs. 2000 including sales tax of 10%. She asks the shopkeeper to reduce the price of the dress so that she can save an amount equal to the sales tax. The reduction in the price of the dress is________.

### Choices

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

a. | Rs 182 | |

b. | Rs 200 | |

c. | Rs 172 | |

d. | All of the above |