Direct and Inverse Proportions (IMO- Mathematics Olympiad Class 8): Questions 35 - 41 of 62

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Question number: 35

» Direct and Inverse Proportions

MCQ▾

Question

For a group of 24 students food lasts for 35 days. For how many days will the same food last for 30 students?

Choices

Choice (4) Response
a.

25 days

b.

30 days

c.

28 days

d.

20 days

Question number: 36

» Direct and Inverse Proportions

MCQ▾

Question

If 6 men take two hour to dig a ditch, how long should it take 16 men to dig a ditch of the same type?

Choices

Choice (4) Response
a.

53 min

b.

35 min

c.

20 min

d.

45 min

Question number: 37

» Direct and Inverse Proportions

MCQ▾

Question

The ratio which (15ofRs5.55) bears to (0.5of1.35) is________.

Choices

Choice (4) Response
a.

1.78

b.

1.64

c.

1.50

d.

1.68

Question number: 38

» Direct and Inverse Proportions

MCQ▾

Question

A man completes 25 of a job in 15 days. At this rate how many more days will it take him to finish the job?

Choices

Choice (4) Response
a.

27

b.

22

c.

22.5

d.

25

Question number: 39

» Direct and Inverse Proportions

MCQ▾

Question

A can do a piece of work in 10 days and B can do alone it in 12 days. B works at it for 5 days and then leaves. A alone can finish the remaining work in________.

Choices

Choice (4) Response
a.

5.8 days

b.

7.5 days

c.

6 days

d.

6.5 days

Question number: 40

» Direct and Inverse Proportions

MCQ▾

Question

1.20 of a number equals 0.36 of another number. The ratio of the number is________.

Choices

Choice (4) Response
a.

10: 3

b.

3: 10

c.

3: 2

d.

2: 3

Question number: 41

» Direct and Inverse Proportions

MCQ▾

Question

If 4 men take an hour to dig a ditch, how long should it take 10 men to dig a ditch of the same type?

Choices

Choice (4) Response
a. 20 min
b.

23 min

c.

24 min

d.

30 min

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