IMO- Mathematics Olympiad (SOF) Class 8: Questions 823 - 828 of 1030

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Question number: 823

» Everyday Mathematics

MCQ▾

Question

Roshni’s age after 15 years will be 5 times his age 5 years back. What is the present age of Roshni?

Choices

Choice (4) Response

a.

10 years

b.

30 years

c.

20 years

d.

25 years

Question number: 824

» Everyday Mathematics

MCQ▾

Question

The average age of 2 boys is 14 years and their ages are in proportion 2: 5, the age of youngest girl is________.

Choices

Choice (4) Response

a.

4 years

b.

9 years

c.

8 years

d.

10 years

Question number: 825

» Everyday Mathematics

MCQ▾

Question

If the cost price is 96 % of the selling price, then what is the profit percentage?

Choices

Choice (4) Response

a.

6.23%

b.

4.17%

c.

4.25%

d.

5%

Question number: 826

» Everyday Mathematics

MCQ▾

Question

A roofer’s 29 feet ladder is against the side of a house. It is 7 yards from the ground to the top of the house. How far away from the house must he place the foot of the ladder in order to have the top of the ladder meet the roof of the house?

Choices

Choice (4) Response

a.

10 feet

b.

15 feet

c.

20 feet

d.

25 feet

Question number: 827

» Everyday Mathematics

MCQ▾

Question

The ages of two persons differ by 16 years. If 6 years ago the elder one be 3 times as old as the younger one, find their present ages.

Choices

Choice (4) Response

a.

12 years, 25 years

b.

14 years, 30 years

c.

15 years, 30 years

d.

All of the above

Question number: 828

» Everyday Mathematics

MCQ▾

Question

A ladder is leaning against a house. The distance between the bases of the ladder to the house is 3 feet. The length of the ladder is 10 feet. In feet, how far above the ground does the ladder touch the house?

Choices

Choice (4) Response

a.

9.5 feet

b.

9 feet

c.

10 feet

d.

All of the above

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