IMO- Mathematics Olympiad (SOF) Class 8: Questions 528 - 535 of 1029

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Question number: 528

» Direct and Inverse Proportions

MCQ▾

Question

A can do a work in 8 days. If B is 60 % more efficient than A, then in how many days can B do the same work?

Choices

Choice (4) Response

a.

3.5

b.

3

c.

5

d.

4

Question number: 529

» Exponents and Powers

MCQ▾

Question

The value of is________.

Choices

Choice (4) Response

a.

b.

49

c.

d.

Question number: 530

» Exponents and Powers

MCQ▾

Question

If and, then is equal to________.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 531

» Direct and Inverse Proportions

MCQ▾

Question

A man completes of a job in 10 days. At this rate how many more days will it take him to finish the job?

Choices

Choice (4) Response

a.

6

b.

7.5

c.

6.5

d.

7

Question number: 532

» Exponents and Powers

MCQ▾

Question

The standard form of 0.00005 is________.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 533

» Exponents and Powers

MCQ▾

Question

Given that and, then the value of is (approximately) ________.

Choices

Choice (4) Response

a.

1.23

b.

1.21

c.

1.99

d.

1.00

Question number: 534

» Direct and Inverse Proportions

MCQ▾

Question

A grocer has just enough money to buy 50 kilo rice worth Rs. 70.00 per kilogram. If cost of the rice is Rs. 10.00 more, then how much rice, he will be able to buy with that amount of money, is________.

Choices

Choice (4) Response

a.

40 Kg

b.

42 Kg

c.

44 Kg

d.

35 Kg

Question number: 535

» Direct and Inverse Proportions

MCQ▾

Question

Pipe A can fill an empty tank in 4 hours while pipe B can empty the full tank in 3 hours. If both are opened in the empty tank, time taken to empty it up completely is ________.

Choices

Choice (4) Response

a.

11 hours

b.

13 hours

c.

15 hours

d.

12 hours

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