Posted On:February 28, 2019, Posted By: Latest Interview Questions,
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Dear Readers, Welcome to __ Percentage - Aptitude Objective Questions__ have been designed specially to get you acquainted with the nature of questions you may encounter during your Job interview for the subject of

**1. Concept of Percentage :**

By a certain percent, we mean that many hundredths. Thus, x percent means x hundredths, written as x%.

=> To express x% as a fraction: We have, x% = x / 100.

Thus, 48% = 48 / 100 = 12 / 25.

=> To express a / b as a percent :

We have a / b = (a / b × 100)%.

**2. If the price of a commodity increases by R%, then the reduction in consumption so as not to increase the expenditure is :**

[R / (100 + R) ×100]%.

=> If the price of a commodity decreases by R%, then the increase in consumption so as not to decrease the expenditure is :

[R / (100 - R) ×100]%.

**3. Results on Population :**

Let the population of a town be P now and suppose it increases at the rate of R% per annum, then :

=> Population after n years = P(1 + R / 100 )n.

=> Population n years ago = P / (1 + R / 100)n.

**4. Results on Depreciation :**

Let the present value of a machine be P. Suppose it depreciates at the rate of R% per annum. Then :

=> Value of the machine after n years = P(1 - R / 100)n.

=> Value of the machine n years ago = P / (1 - R / 100)n.

Sol:

Number of valid votes = 80% of 7500

= (80/100×7500)

= (0.8×7500)

= 6000.

Valid votes polled by other candidates = 45% of 6000

= (45/100×6000)

= (0.45×6000)

= 2700.

Sol: Let the amount of taxable purchases be Rs.x.

Then, 6% of x = 30/100

6/100 × x = 30/100

x = (30/100×100/6)

= 5.

Cost of tax free items = Rs.[25 - (5 + 0.30)]

= Rs. 19.70

Sol: Actual price = Rs. (25 + 2.50)

= Rs. 27.50

Therefore, saving = (2.50 / 27.50 ×100)%

= 100 / 11%

= 9×1/11%

= 9%.

Sol: Required percentage = (3/24×100)%

= (25 / 2)%.

= 12×1/2%.

Sol: Quantity of pure acid = 20% of 8 litres

= (20/100×8)litres

= 1.6 litres.

A. 39, 30

B. 41, 32

C. 42, 33

D. 43, 34

Ans: C

A. 588 apples

B. 600 apples

C. 672 apples

D. 700 apples

Ans: D

A. 4% of a

B. 5% of a

C. 20% of a

D. None of these

Ans: A

A. 4.37%

B. 5%

C. 6%

D. 8.75%

Ans: B

A. 8%

B. 7%

C. 10%

D. 6%

Ans: A

A. 2 : 1

B. 1 : 2

C. 1 : 1

D. 4 : 3

Ans: D

A. 57%

B. 50%

C. 52%

D. 60%

Ans: A

A. 420

B. 700

C. 220

D. 400

Ans: B

A. 64%

B. 32%

C. 34%

D. 42%

Ans: A

A. 35%

B. 25%

C. 32%

D. 28%

Ans: B

A. Rs. 200

B. Rs. 250

C. Rs. 300

D. None of these

Ans: B

A. Rs. 32.500

B. Rs. 48,750

C. Rs. 76,375

D. Rs. 81,250

Ans: C