Everyday Mathematics (IMO- Mathematics Olympiad (SOF) Class 9): Questions 18 - 22 of 99

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Question number: 18

» Everyday Mathematics

MCQ▾

Question

P and Q can do a piece of work in 15 days and Q alone can do it in 30 days. The time taken by P alone to do the work is ________

Choices

Choice (4) Response

a.

35 days

b.

12 days

c.

40 days

d.

30 days

Question number: 19

» Everyday Mathematics

MCQ▾

Question

In Arun’s opinion, his weight is greater than 65 kg but less than 72 kg. His brother does not agree with Arun and he thinks that Arun’s weight is greater than 60 kg but less than 70 kg. His mother’s view is that his weight cannot be greater than 68 kg. If all of them are correct in their estimations, what is the average of different probable weights of Arun?

Choices

Choice (4) Response

a.

68 kg

b.

67 kg

c.

69 kg

d.

Question does not provide sufficient data or is vague

Question number: 20

» Everyday Mathematics

MCQ▾

Question

A, B and C enter into partnership by making investments in the ratio. After a year, C invests another Rs. 337600 while A withdrew Rs. 45600. The ratio of investments then changes to. How much did A invest initially?

Choices

Choice (4) Response

a.

Rs. 96000

b.

Rs. 141600

c.

Rs. 45600

d.

Question does not provide sufficient data or is vague

Question number: 21

» Everyday Mathematics

MCQ▾

Question

Hussain’s weight is times more than the weight of Rahim. Their total weight is 90 kg. what is Hussain’s weight?

Choices

Choice (4) Response

a.

90 kg

b.

20 kg

c.

40 kg

d.

50 kg

Question number: 22

» Everyday Mathematics

MCQ▾

Question

The difference between a discount of on Rs. 1000 and two successive discounts of on the same amount is ________

Choices

Choice (4) Response

a.

Rs. 14.56

b.

Rs. 18.40

c.

Rs. 22

d.

Rs. 17.20

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