# Everyday Mathematics (IMO- Mathematics Olympiad Class 8): Questions 45 - 51 of 100

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## Question number: 45

» Everyday Mathematics

MCQ▾

### Question

Dishant gets 2 marks for each correct answer and loses 1 marks for each wrong answer. He attempts 60 problems and obtains 15 marks. The number of problem solved correctly is________.

### Choices

Choice (4) Response

a.

25

b.

18

c.

10

d.

21

## Question number: 46

» Everyday Mathematics

MCQ▾

### Question

If students of a class of strength 90 are girls, then number of boys equals________.

### Choices

Choice (4) Response

a.

50

b.

30

c.

40

d.

10

## Question number: 47

» Everyday Mathematics

MCQ▾

### Question

Vimal is traveling at an average rate of 40 miles per hour. How far does he travel in 1 hours?

### Choices

Choice (4) Response

a.

60 miles

b.

100 miles

c.

50 miles

d.

20 miles

## Question number: 48

» Everyday Mathematics

MCQ▾

### Question

The average age of 4 boys is 25 years and their ages are in proportion 1: 2: 3: 4, the age of youngest girl is________.

### Choices

Choice (4) Response

a.

4 years

b.

5 years

c.

10 years

d.

9 years

## Question number: 49

» Everyday Mathematics

MCQ▾

### Question

Two pens and three pencils cost Rs. 80. Four pens and a pencils cost Rs. 112. Find the cost of the pen.

### Choices

Choice (4) Response

a.

11

b.

25

c.

30

d.

35

## Question number: 50

» Everyday Mathematics

MCQ▾

### Question

The total area of a semicircle and a rectangle is equal to 177 sq. cm. The diameter of the circle is 14 cm and the length of the rectangle is 20 cm. The perimeter of a rectangle is________.

### Choices

Choice (4) Response

a.

40 cm

b.

60 cm

c.

55 cm

d.

50 cm

## Question number: 51

» Everyday Mathematics

MCQ▾

### Question

The average age of 3 girls is 15 years and their ages are in proportion 3: 5: 7, the age of youngest girl is________.

### Choices

Choice (4) Response

a.

4 years

b.

9 years

c.

5 years

d.

10 years

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