# IMO- Mathematics Olympiad Class 9: Questions 487 - 492 of 919

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## Question number: 487

MCQ▾

### Question

P and Q can do a piece of work in 10 days and P alone can do it in 20 days. The time taken by Q alone to do the work is ________

### Choices

Choice (4) Response

a.

19 days

b.

20 days

c.

10 days

d.

22 days

## Question number: 488

MCQ▾

### Question

If a number x is chosen at random from the numbers 1, 2, 3 and the number y is selected from 1, 4, 9, and then is________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 489

MCQ▾

### Question

A sum was put a simple interest at a certain rate for 3 years. Had it been put at higher rate, it would have fetched Rs. 80 more. The sum is________

### Choices

Choice (4) Response

a.

Rs. 750

b.

Rs. 820

c.

Rs. 700

d.

Rs. 940

## Question number: 490

MCQ▾

### Question

Choose the odd numeral pair/group

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 491

MCQ▾

### Question

Which of the following words will come 2nd in the dictionary?

### Choices

Choice (4) Response

a.

Name

b.

Came

c.

Fame

d.

Shame

## Question number: 492

MCQ▾

### Question

A contractor employed 18 labourers at Rs. 12 each per day, 10 labourers at Rs. 13.50 each per day, 5 labourers at Rs. 25 each per day and 2 labourers at Rs. 42 each per day. The average wages paid is ________

### Choices

Choice (4) Response

a.

Rs. 28

b.

Rs. 24

c.

Rs. 20

d.

Rs. 16

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