Aptitude [3i Infotech Placement]: Sample Questions 7 - 10 of 76

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Question 7

Question MCQ▾

One wall being made entirely of bricks is 40% built. If we need 1,200 more bricks to complete the wall, how many bricks will the wall have?

Choices

Choice (4)

a.

1,500

b.

1,800

c.

2,000

d.

2,400

Edit

Answer

c.

Explanation

We are given that 60% of bricks are equal to 1200 bricks.

Let there be total x number of bricks.

So, to construct the whole wall 2000 bricks will be required.

Question 8

Question MCQ▾

If and then what is the value of x?

Choices

Choice (4)

a.

16

b.

8

c.

6

d.

12

Edit

Answer

b.

Explanation

Here,

Substituting value of y and z in terms of x,

and

Question 9

Write in Short Short Answer▾

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

Edit

Explanation

Cost price of the car is ₹ 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 ₹ 66.

Question 10

Write in Short Short Answer▾

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

Edit

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.