Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad Class 7): Questions 116 - 121 of 122

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Question number: 116

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The ratio of the number of boys and girls in a college is 4: 3. If the percentage increase in the number of boys and girls be 17 % and 22 % respectively, what will be the new ratio?

Choices

Choice (4) Response

a.

12: 21

b.

5: 9

c.

21: 22

d.

34: 33

Question number: 117

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A boat covers a certain distance downstream in 1 hour, while it comes back in 1Equation hours. If the speed of the stream be 2 kmph, what is the speed of the boat in still water?

Choices

Choice (4) Response

a.

11 kmps

b.

15 kmps

c.

5 kmps

d.

8 kmps

Question number: 118

» Mental Ability » Basic Arithmetic

MCQ▾

Question

What percent of Equation is Equation ?

Choices

Choice (4) Response

a.

20%

b.

25%

c.

0.4%

d.

2.5%

Question number: 119

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The present ages of three persons in proportions 3: 6: 9. Five years ago, the sum of their ages was 57. Find their present ages (in years).

Choices

Choice (4) Response

a.

12, 24, 36

b.

18, 32, 15

c.

15, 30, 45

d.

All of the above

Question number: 120

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A farmer has 2 grasshoppers of the same species. The corresponding parts of the grasshopper’s bodies are proportional. The larger grasshopper has an 8 cm body and a 1.5 cm forelimb. The smaller grasshopper has a 1.2 cm forelimb. How long is the body of the smaller grasshopper?

Choices

Choice (4) Response

a.

10.0 cm

b.

6.4 cm

c.

6.0 cm

d.

7.7 cm

Question number: 121

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A farmer has 2 grasshoppers of the same species. The corresponding parts of the grasshopper’s bodies are proportional. The larger grasshopper has an 15 cm body and a 10 cm forelimb. The smaller grasshopper has a 20 cm forelimb. How long is the body of the smaller grasshopper?

Choices

Choice (4) Response

a.

40 cm

b.

70 cm

c.

30 cm

d.

50 cm

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