# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 813 - 817 of 1042

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## Question 813

### Question

MCQ▾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 814

### Question

MCQ▾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 815

### Question

MCQ▾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 816

Appeared in Year: *2012*

### Question

MCQ▾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 817

### Question

MCQ▾Priya goes to a shop to buy a dress costing ₹ 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. | ₹ 182 | |

b. | ₹ 200 | |

c. | ₹ 172 | |

d. | All of the above |