3i Infotech Papers: Sample Questions 10 - 12 of 1245

Examrace Placement Series prepares you for the toughest placement exams to top companies.

Question number: 10

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What is the selling price of a car if the cost of the car is Rs. 60 and a profit of 10 % over selling price is earned?

Explanation

Cost price of the car is Rs. 60.

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

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

We already know that,

So, selling price will of the car will be Rs. 66.

Question number: 11

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15 liters of water containing 20 % alcohol, we add 5 liters of pure water. What is % alcohol?

Explanation

In 15 liters of waters there is 20 % alcohol.

So,

If we will add 5 liters of water then there will be total 20 liter solution. Among which 3 liter alcohol is there.

We are asked to find the percentage of alcohol present.

What percent of 20 liters solution is 3 liter alcohol?

So, alcohol is 15 % of total solution.

Question number: 12

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A wizard named Nepo says “I am only three times my son’s age. My father is 40 years more than twice my age. Together the three of us are a mere 1240 years old. ” How old is Nepo?

Explanation

Nepo said that he is three times my son’s age.

Nepo’s father is 40 years more than twice of Nepo’s age.

Let’s say, Nepo’s present age be n years, his son be s years old and his father be f years old.

So, from given information, and

We are given that sum of their ages is 1240 years.

We are asked to find the age of Nepo.

So,

So, Nepo’s present age is 360 years.