IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 538 - 546 of 1042

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Question 538

Question

MCQ▾

The ratio of boys and girls in a school of 650 students is . How many boys should be admitted to make ratio ?

Choices

Choice (4)Response

a.

130

b.

40

c.

50

d.

120

Question 539

Question

MCQ▾

The value of

Choices

Choice (4)Response

a.

6

b.

7

c.

1

d.

5

Question 540

Question

MCQ▾

The value of is ________.

Choices

Choice (4)Response

a.

4000

b.

8000

c.

2000

d.

1000

Question 541

Question

MCQ▾

The ratio which bears to is________.

Choices

Choice (4)Response

a.

1.65

b.

1.50

c.

1.78

d.

1.68

Question 542

Question

MCQ▾

If and , then the value of is ________.

Choices

Choice (4)Response

a.

8

b.

9

c.

10

d.

6

Question 543

Question

MCQ▾

A sum of money is sufficient to pay wages for 25 days and wages for 25 days. The same money is sufficient to pay the wages of both for ________.

Choices

Choice (4)Response

a.

12 days

b.

11 days

c.

days

d.

10 days

Question 544

Question

MCQ▾

A bag contains 25 paise, 10 paise and 5 paise coins in the ratio 1: 4: 5. If their total value is ₹ 90, the number of 10 paise coins is ________.

Choices

Choice (4)Response

a.

600

b.

500

c.

800

d.

400

Question 545

Question

MCQ▾

If A: B = 1: 4 and B: C = 3: 5, then C: A is equal to, ________.

Choices

Choice (4)Response

a.

25: 14

b.

20: 3

c.

3: 20

d.

24: 15

Question 546

Question

MCQ▾

The solution of , is________.

Choices

Choice (4)Response

a.

-2

b.

-1

c.

3

d.

4