# Mathematics-Direct and Inverse Proportions [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 1 - 8 of 90

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## Question 1

### Question

MCQ▾42 men can complete a piece of work in 6 days. How many men can complete the same work in 18 days?

### Choices

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

a. | 12 | |

b. | 126 | |

c. | 18 | |

d. | 14 |

## Question 2

## Question 3

### Question

MCQ▾The ratio of third proportional to 24 and 60 and the mean proportional between 18 and 50 is:

### Choices

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

a. | 3: 2 | |

b. | 1: 5 | |

c. | 5: 3 | |

d. | 5: 1 |

## Question 4

### Question

MCQ▾x varies inversely as square of y. Given that for . The value of x for will be equal to:

### Choices

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

a. | 3 | |

b. | ||

c. | ||

d. |

## Question 5

## Question 6

### Question

MCQ▾A supplier undertook to do a certain piece of work in 36 days. He employed certain number of men, but 8 of them being absent from the very first day, the rest could finish the work in 54 days. The numbers of men originally employed were:

### Choices

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

a. | 16 | |

b. | 8 | |

c. | 36 | |

d. | 24 |

## Question 7

## Question 8

### Question

MCQ▾If the price of 15 pens is Rs. 187.5, what will be the approximate price of 18 pens?

### Choices

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

a. | 225 | |

b. | 215 | |

c. | 154.5 | |

d. | 275.5 |