# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 528 - 535 of 1040

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## Question number: 528

Edit
MCQ▾

### Question

A can do a work in 8 days. If B is 60 % more efficient than A, then in how many days can B do the same work?

### Choices

Choice (4) Response

a.

3.5

b.

4

c.

5

d.

3

## Question number: 529

Edit
MCQ▾

### Question

The value of is________.

### Choices

Choice (4) Response

a.

b.

c.

d.

49

## Question number: 530

Edit
MCQ▾

### Question

If and, then is equal to________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 531

Edit
MCQ▾

### Question

A man completes of a job in 10 days. At this rate how many more days will it take him to finish the job?

### Choices

Choice (4) Response

a.

6

b.

7.5

c.

7

d.

6.5

## Question number: 532

Edit
MCQ▾

### Question

The standard form of 0.00005 is________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 533

Edit
MCQ▾

### Question

Given that and, then the value of is (approximately) ________.

### Choices

Choice (4) Response

a.

1.21

b.

1.99

c.

1.23

d.

1.00

## Question number: 534

Edit
MCQ▾

### Question

A grocer has just enough money to buy 50 kilo rice worth Rs. 70.00 per kilogram. If cost of the rice is Rs. 10.00 more, then how much rice, he will be able to buy with that amount of money, is________.

### Choices

Choice (4) Response

a.

40 Kg

b.

35 Kg

c.

42 Kg

d.

44 Kg

## Question number: 535

Edit
MCQ▾

### Question

Pipe A can fill an empty tank in 4 hours while pipe B can empty the full tank in 3 hours. If both are opened in the empty tank, time taken to empty it up completely is ________.

### Choices

Choice (4) Response

a.

15 hours

b.

11 hours

c.

12 hours

d.

13 hours