# Linear Equations in One Variable (IMO- Mathematics Olympiad Class 8): Questions 39 - 45 of 61

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## Question number: 39

» Linear Equations in One Variable

MCQ▾

### Question

The value of for which is_.

### Choices

Choice (4) Response

a.

7

b.

c.

6

d.

## Question number: 40

» Linear Equations in One Variable

MCQ▾

Solve for

### Choices

Choice (4) Response

a.

9

b.

c.

2

d.

1

## Question number: 41

» Linear Equations in One Variable

MCQ▾

### Question

A motor boat covers a certain distance downstream in a river in 1 hours. It covers the same distance upstream in 5 hours. The speed of the water is 6.0 km/hr. The speed of the boat in still water is_.

### Choices

Choice (4) Response

a.

9 km/hr

b.

19.5 km/hr

c.

5 km/hr

d.

11 km/hr

## Question number: 42

» Linear Equations in One Variable

MCQ▾

### Question

A number 125 is divided into two parts in the ratio 2: 3. The product of the number is_.

### Choices

Choice (4) Response

a.

1550

b.

3750

c.

1250

d.

3211

## Question number: 43

» Linear Equations in One Variable

MCQ▾

### Question

If the angles of a triangle are in the ratio 2: 4: 6, then the summation of the greatest and smallest angles is_.

### Choices

Choice (4) Response

a.

b.

c.

d.

60

## Question number: 44

» Linear Equations in One Variable

MCQ▾

### Question

Of a number divided by of a square of same number make . The number is_.

### Choices

Choice (4) Response

a.

75

b.

50

c.

25

d.

20

## Question number: 45

» Linear Equations in One Variable

MCQ▾

### Question

5 years ago a father’s age is 3 times greater to his son’s age. In present age of a son is 15 years then how old the father is?

### Choices

Choice (4) Response

a.

40 years

b.

35 years

c.

47 years

d.

44 years

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