# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 521 - 530 of 1042

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## Question 521

### Question

MCQ▾

For a group of 15 students food lasts for 50 days. For how many days will the same food last for 75 students?

### Choices

Choice (4)Response

a.

25 days

b.

10 days

c.

15 days

d.

20 days

## Question 522

### Question

MCQ▾

The value of is________.

### Choices

Choice (4)Response

a.

4

b.

1

c.

2

d.

5

## Question 523

### Question

MCQ▾

If , then is________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 524

### Question

MCQ▾

The standard form of 12650000 is________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 525

### Question

MCQ▾

If and , then the value of is ________.

### Choices

Choice (4)Response

a.

6

b.

8

c.

9

d.

10

## Question 526

### Question

MCQ▾

The weight of a 12 m long iron rod is 20.5 kg. The weight of 5 m long of such rod will be________.

### Choices

Choice (4)Response

a.

8.54 kg

b.

8 kg

c.

9.5 kg

d.

9 kg

## Question 527

### Question

MCQ▾

The weight of a 15 m long iron rod is 25 kg. The weight of 10 m long of such rod will be________.

### Choices

Choice (4)Response

a.

18.54 kg

b.

18 kg

c.

16.6 kg

d.

16 kg

## Question 528

### Question

MCQ▾

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 529

### Question

MCQ▾

The value of is________.

### Choices

Choice (4)Response

a.

b.

c.

d.

49

## Question 530

### Question

MCQ▾

If and , then is equal to________.

### Choices

Choice (4)Response

a.

b.

c.

d.