# Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad Class 7): Questions 99 - 105 of 122

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to **416** questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 300.00 or

## Question number: 99

» Mental Ability » Basic Arithmetic

### Question

Two cubes have volumes in the ratio 1: 125. Then the ratio of their sides is

### Choices

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

a. | 1: 18 | |

b. | 1: 2 | |

c. | 1: 5 | |

d. | 1: 8 |

## Question number: 100

» Mental Ability » Basic Arithmetic

### Question

The present ages of three persons in proportions 2: 3: 4. Five years ago, the sum of their ages was 48. Find their present ages (in years).

### Choices

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

a. | 16, 28, 26 | |

b. | 8, 20, 28 | |

c. | 14, 21, 28 | |

d. | None of the above |

## Question number: 101

» Mental Ability » Basic Arithmetic

### Question

Two poles 30 m and 15 m high stand upright in a ground. If their feet are 36 m apart, find the distance between tops.

### Choices

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

a. | 30 m | |

b. | 39 m | |

c. | 35 m | |

d. | 25 m |

## Question number: 102

» Mental Ability » Basic Arithmetic

### Question

A boat covers a certain distance downstream in 2 hour, while it comes back in 1 hours. If the speed of the stream be 5 kmph, what is the speed of the boat in still water?

### Choices

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

a. | 25 kmps | |

b. | 35 kmps | |

c. | 12 kmps | |

d. | 11 kmps |

## Question number: 103

» Mental Ability » Basic Arithmetic

### Question

The average age of 15 children in a class is 7 years. If the teacher’s age is included, the average age becomes 10 years. Find the teacher’s age.

### Choices

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

a. | 55 | |

b. | 42 | |

c. | 35 | |

d. | 45 |

## Question number: 104

» Mental Ability » Basic Arithmetic

### Question

. If = 0.008, then will be ________

### Choices

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

a. | 0.125 | |

b. | 1 | |

c. | 0.0625 | |

d. | 0.20 |

## Question number: 105

» Mental Ability » Basic Arithmetic

### Question

A shopkeeper declares a sale of electronics item, giving 15 % discount. If the net sale price of an electronic item is rupees 5000, what is its market price?

### Choices

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

a. | 550 Rs. | |

b. | 952 Rs. | |

c. | 5882.35 Rs. | |

d. | 500 Rs. |