IMO- Mathematics Olympiad Class 8: Questions 84 - 89 of 1029

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Question number: 84

» Linear Equations in One Variable

MCQ▾

Question

The sum of the ages of a man and his wife is 77yrs. The man is 17 years older than his wife. How old is the man?

Choices

Choice (4) Response

a.

44 years

b.

47 years

c.

35 years

d.

40 years

Question number: 85

» Linear Equations in One Variable

MCQ▾

Question

Solution of the equation 4(3x+1)2(2x1)=5(x3)4(3x1)+7x is_.

Choices

Choice (4) Response

a.

138

b.

1

c.

1312

d.

178

Question number: 86

» Linear Equations in One Variable

MCQ▾

Question

Two angles in a triangle in the ratio 1: 3. If the sum of these angles is equal to the third angle, then the third angle is_.

Choices

Choice (4) Response

a.

90°

b.

180°

c.

60°

d.

45°

Question number: 87

» Linear Equations in One Variable

MCQ▾

Question

There were only two candidates in an election. One got 65 % votes and was elected by a margin of 900 votes. The total number of voters were_.

Choices

Choice (4) Response

a.

1000

b.

3000

c.

2000

d.

500

Question number: 88

» Linear Equations in One Variable

MCQ▾

Question

The denominator of a rational number is greater than its numerator by 2. If 2 is subtracted from the numerator and 3 is added to its denominator, the new number becomes 15 . The original number is_.

Choices

Choice (4) Response

a.

723

b.

1523

c.

1514

d.

2315

Question number: 89

» Linear Equations in One Variable

MCQ▾

Question

(27)th Of a number added to 17 of a same number make 157 . The number is_.

Choices

Choice (4) Response

a.

1

b.

5

c.

2

d.

7

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