# 3i Infotech Placement: Sample Questions 55 - 57 of 1245

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## Question 55

Edit

### Write in Short

The cost of an item is ₹ 12.60. If the profit is 10 % over selling price what is the selling price?

### Explanation

Cost price of an item is ₹ 12.60.

When the item is sold, it makes a profit of 10 % .

We are asked to find the selling price of the item.

So, selling price will of the item will be ₹ 13.86.

## Question 56

Edit

### Write in Short

What does the swapping system do if it identifies the illegal page for swapping?

### Explanation

• If the disk block descriptor does not contain any record of the faulted page then the attempted memory reference is invalid and the kernel sends a segmentation violation signal to the offending process.
• This happens when the swapping system identified any invalid memory reference.

## Question 57

### Question

MCQ▾

A car travels a certain distance taking 7 hrs in forward journey, during the return journey increased speed 12km/hr takes the times 5 hrs. What distance car has traveled?

### Choices

Choice (4)

a.

30 km

b.

20 km

c.

210 km

d.

None of the above

c.

### Explanation

A car travels a certain distance taking 7 hours in forward journey.

During the return journey, speed is increased by 12 kmph and it took only 5 hours to complete the journey.

Let the speed of the car in the forward journey be x kmph.

Distance covered in both forward and return path will remain same.

So,

So, speed of the car in forward journey is 30 kmph.

We are asked to find the distance traveled by the car.

So, car has traveled 210 km distance.

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