# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 555 - 559 of 1022

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## Question 555

### Question

MCQ▾Three bells toll at intervals of 36 seconds, 40 seconds and 48 seconds respectively. They start ringing together at a particular time. They next toll together after ________.

### Choices

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

a. | 12 minutes | |

b. | 24 minutes | |

c. | 18 minutes | |

d. | 6 minutes |

## Question 556

### Question

MCQ▾In our office there are 60 % female employees. 50 % of all the male employees are computer literate. If there 62 % employees are computer literate out of the total 1600 employees, then the number of female employees who are computer literate is ________.

### Choices

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

a. | 672 | |

b. | 690 | |

c. | Can’t be determined | |

d. | 960 |

## Question 557

### Question

MCQ▾A person by selling an article for Rs. 450, loses 20%, In order to make a profit of 20%, what is the price at which he must sell?

### Choices

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

a. | Rs. 500 | |

b. | Rs. 575 | |

c. | Rs. 475 | |

d. | Rs. 675 |

## Question 558

### Question

MCQ▾During a football match, 5400 people showed their spirit by wearing home team’s colors. If 18000 people attended the game, what percent of crowd wear the same colors?

### Choices

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

a. | 20% | |

b. | 30% | |

c. | 25% | |

d. | 50% |

## Question 559

### Question

MCQ▾Sneha saves of her salary each month by creating fixed deposit in bank. What percent of her salary she saved?

### Choices

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

a. | 15% | |

b. | 12.5% | |

c. | 80% | |

d. | 18.2% |