IMO- Mathematics Olympiad Class 10: Questions 569 - 572 of 958

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Question number: 569

» Everyday Mathematics

MCQ▾

Question

P, Q and R start at the same time in the same direction to run around a circular stadium. P completes a round in 200 seconds, Q in 100 seconds and R in 300 seconds, all starting at the same point. After what time will they meet again at the starting point?

Choices

Choice (4) Response

a.

30 minutes

b.

10 minutes

c.

16 minutes

d.

20 minutes

Question number: 570

» Everyday Mathematics

MCQ▾

Question

Walking at three-fourths of his usual speed a man covers a certain distance in two hours than the time he takes to cover the distance at his usual speed. The time taken by him to cover the distance with his usual speed is ________

Choices

Choice (4) Response

a.

4.5 hours

b.

6 hours

c.

5.5 hours

d.

5 hours

Question number: 571

» Everyday Mathematics

MCQ▾

Question

The ratio between the ages of Dipti and Cristal at present is Equation . Three years hence the ratio of their ages will be Equation . What is the present age of Cristal?

Choices

Choice (4) Response

a.

28 years

b.

27 years

c.

24 years

d.

26 years

Question number: 572

» Everyday Mathematics

MCQ▾

Question

Shivam buys a watch for Rs. 1, 60, 000. He pays half of the amount in cash and agrees to pay the balance in 12 annual instalments of Rs. 6000 each. If the rate of interest is Equation and he pays with the instalment the interest due on the unpaid amount, find the total cost of the watch.

Choices

Choice (4) Response

a.

6, 28, 000

b.

5, 27, 750

c.

8, 27, 000

d.

9, 84, 800

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