IMO- Mathematics Olympiad (SOF) Class 8: Questions 111 - 117 of 1030

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Question number: 111

» Linear Equations in One Variable

MCQ▾

Question

Two angles in a triangle in the ratio 3: 2. If the sum of these angles is equal to the third angle, then the third angle is_.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 112

» Linear Equations in One Variable

MCQ▾

Question

A man is 5 years older than his wife and his wife is now five times as old as their daughter, who is 8 years old. How old the man when his daughter was born?

Choices

Choice (4) Response

a.

30 years

b.

40 years

c.

35 years

d.

37 years

Question number: 113

» Linear Equations in One Variable

MCQ▾

Question

Rohit was 4 times as old as his son 8 years ago. After 8 years, Rohit will be twice as old as his son. What are their present ages?

Choices

Choice (4) Response

a.

20 years, 50 years

b.

10 years, 30 years

c.

15 years, 35 years

d.

16 years, 40 years

Question number: 114

» Linear Equations in One Variable

MCQ▾

Question

If of a number is 20 less than the original number, then the number is_.

Choices

Choice (4) Response

a.

30

b.

50

c.

40

d.

60

Question number: 115

» Linear Equations in One Variable

MCQ▾

Question

If the angles of a triangle are in the ratio 3: 2: 1, then the difference between the greatest and smallest angles is_.

Choices

Choice (4) Response

a.

b.

c.

d.

60

Question number: 116

» Linear Equations in One Variable

MCQ▾

Question

A number consists of two digits whose sum is 10. If 18 is added to the number, the digits are interchanged. The number is_.

Choices

Choice (4) Response

a.

26

b.

46

c.

62

d.

64

Question number: 117

» Linear Equations in One Variable

MCQ▾

Question

The value of for which is_.

Choices

Choice (4) Response

a.

b.

c.

21

d.

20

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