# Mental Ability (NCO- Cyber Olympiad (SOF) Class 7): Questions 170 - 176 of 205

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## Question number: 170

» 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: 171

» Mental Ability » Basic Algebra

MCQ▾

### Question

Express 0.11 as a vulgar fraction.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 172

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

A boat covers a certain distance downstream in 1 hour, while it comes back in 1 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: 173

» Mental Ability » Basic Geometry

MCQ▾

### Question

XYZ is an isosceles triangle with XY = 12 m and, then XZ ________?

### Choices

Choice (4) Response

a.

12 m

b.

6 m

c.

3 m

d.

11 m

## Question number: 174

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

What percent of is ?

### Choices

Choice (4) Response

a.

20%

b.

25%

c.

0.4%

d.

2.5%

## Question number: 175

» 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: 176

» Mental Ability » Basic Geometry

MCQ▾

### Question

ABC is an isosceles triangle with AB = AC and AD is altitude, then for angles

### Choices

Choice (4) Response

a.

B ≥ C

b.

B > C

c.

B = C

d.

B < C

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