# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 520 - 524 of 1022

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## Question 520

### Question

MCQ▾A shopkeeper priced 1 dozen bananas for 20 ₹ Below chart show price of 1 dozen to 4 dozen bananas.

Banana | 1 | 2 | 3 | 4 | 5 |

Price (₹) | 20 | 40 | 60 | 80 | - |

What is the missing price in the chart for 5 dozen bananas?

### Choices

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

a. | 120 | |

b. | 160 | |

c. | 90 | |

d. | 100 |

## Question 521

### Question

MCQ▾Two equal containers are filled with a mixture of milk and water. The concentration of milk in each of the containers is 20 % and 25 % respectively. What is ratio of water in both the containers respectively?

### Choices

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

a. | 5: 4 | |

b. | 16: 15 | |

c. | 15: 16 | |

d. | 4: 5 |

## Question 522

### Question

MCQ▾There is 25 liters oil in red container and 35 more liters oil in black container. What is the ratio of oil in black container to the total liters of oil in both containers?

### Choices

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

a. | 19: 14 | |

b. | 15: 9 | |

c. | 9: 14 | |

d. | 14: 19 |

## Question 523

### Question

MCQ▾The cost price of a pair of sandal is ₹ 3600 and the profit percent is . Find the selling price of the watch.

### Choices

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

a. | ₹ 4510 | |

b. | ₹ 5200 | |

c. | ₹ 4450 | |

d. | ₹ 3420 |

## Question 524

### Question

MCQ▾The total cost of 3 tables and 2 chairs is ₹ 745. If one table costs ₹ 40 more than one chair, find the price of each table and chair respectively.

### Choices

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

a. | ₹ 120, ₹ 80 | |

b. | ₹ 160, ₹ 120 | |

c. | ₹ 200, ₹ 160 | |

d. | ₹ 165, ₹ 125 |