# 3i Infotech Papers: Sample Questions 31 - 33 of 1245

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## Question number: 31

MCQ▾

### Question

If a boat is moving in upstream with velocity of 14 km/hr and goes downstream with a velocity of 40 km/hr, then what is the speed of the stream?

### Choices

Choice (4) Response

a.

13 km/hr

b.

26 km/hr

c.

34 km/hr

d.

Question does not provide sufficient data or is vague

a.

### Explanation

Boat is moving in upstream with velocity of 14 kmph and downstream with a velocity of 40 kmph.

Upstream speed, b = 14 kmph

Downstream speed, a = 40 kmph

We are asked to find the speed of stream.

Speed of stream will be,

= 13 kmph

So, speed of stream is 13 kmph.

## Question number: 32

MCQ▾

### Question

A goat is tied to one corner of a square plot of side 12m by a rope 7m long. Find the area it can graze?

### Choices

Choice (4) Response

a.

155 sq. m

b.

144 sq. m

c.

38.5 sq. m

d.

19.25 sq. m

c.

### Explanation

A goat is tied to one corner of a square plot of side 12 m by a rope of 7 m long.

We are asked to find the area that goat can graze.

As goat is tied at one corner of the square, it can cover only (1/4) (pi x r2) area.

Here, r = 7m

So, area that can be grazed by goat

= 38.5 sq. m

## Question number: 33

MCQ▾

If , then =

### Choices

Choice (4) Response

a.

2

b.

c.

d.

1