# IMO- Mathematics Olympiad Class 8: Questions 584 - 591 of 1029

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## Question number: 584

MCQ▾

### Question

If , then the value of is________.

### Choices

Choice (4) Response

a.

36

b.

35

c.

39

d.

31

## Question number: 585

MCQ▾

### Question

A sum of money is sufficient to pay wages for 15 days and wages for 20 days. The same money is sufficient to pay the wages of both for ________.

### Choices

Choice (4) Response

a.

10 days

b.

days

c.

days

d.

8 days

## Question number: 586

MCQ▾

### Question

The value of is________.

### Choices

Choice (4) Response

a.

675

b.

690

c.

630

d.

655

## Question number: 587

MCQ▾

### Question

If 5 men take an hour to dig a ditch, how long should it take 20 men to dig a ditch of the same type?

### Choices

Choice (4) Response

a.

14 min

b.

13 min

c.

15 min

d.

21 min

## Question number: 588

MCQ▾

### Question

If, then the value of is________.

### Choices

Choice (4) Response

a.

3

b.

2

c.

1

d.

4

## Question number: 589

MCQ▾

### Question

An agent receives a commission of Rs. 30.00 on sales of Rs. 2500.00. The commission he get on sales of Rs. 1000.00 is________.

### Choices

Choice (4) Response

a.

Rs 2.5

b.

Rs 1.2

c.

Rs 2

d.

Rs 3.5

## Question number: 590

MCQ▾

Simplify:

### Choices

Choice (4) Response

a.

0

b.

1

c.

d.

## Question number: 591

MCQ▾

### Question

Pipes A and B can fill a tank in 3 and 4 hours respectively. Pipe C can empty it in 8 hours. If all the three pipes are opened together, then the tank will be filled in:

### Choices

Choice (4) Response

a.

hours

b.

hours

c.

hours

d.

hours

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