Everyday Mathematics (IMO- Mathematics Olympiad Class 9): Questions 64 - 68 of 99

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Question number: 64

» Everyday Mathematics

MCQ▾

Question

A milk vendor has 2 cans of milk. The first contains 30% water and the rest milk. The second contains 50% water. How much milk should he mix from each of the containers so as to get 20 liters of milk such that the ratio of water to milk is 6:11 ?

Choices

Choice (4) Response

a.

14.71 liters, 5.29 liters

b.

4.12 liters, 8.52 liters

c.

17 liters, 15 liters

d.

5.12 liters, 17.52 liters

Question number: 65

» Everyday Mathematics

MCQ▾

Question

The simple interest on a sum of money at 8% per annum for 6 years is half the sum. The sum is ________

Choices

Choice (4) Response

a.

Rs. 8000

b.

Rs. 6000

c.

Rs. 4800

d.

Data inadequate

Question number: 66

» Everyday Mathematics

MCQ▾

Question

A shopkeeper earns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of the cost price and the printed price of the book is ________

Choices

Choice (4) Response

a.

50:61

b.

45:56

c.

99:125

d.

All of the above

Question number: 67

» Everyday Mathematics

MCQ▾

Question

If 36 men can do a certain piece of work in 25 days, then 15 men will do it in ________

Choices

Choice (4) Response

a.

40days

b.

60days

c.

101536days

d.

50days

Question number: 68

» Everyday Mathematics

MCQ▾

Question

Aparna cut a cake in two equal parts and one of these two pieces is again cut into equal parts. Each small parts is of 20 grams. If there are seven parts of the whole cake, what was the weight of the original cake?

Choices

Choice (4) Response

a.

140 grams

b.

280 grams

c.

240 grams

d.

300 grams

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