Top 100+ Percentage Aptitude Questions with Answers - 1

Ans: B

Price of 5 pairs when purchased separately = Rs. 5.

Price of 5 pair package = Rs. 3.40.

Difference in price = Rs. (5 – 3.40) = Rs. 1.60.

Therefore, Required percentage =$$(1.6/ {5} × 100)$$% = 32%.

Ans: B

Number of males = 180000.

Number of females = (300000 – 180000) = 120000.

Number of literates = 50% of 300000 = 150000.

Number of literate males = 70% of 180000 = 126000.

Number of literate females = (150000 – 126000) = 24000.

Therefore, Required percentage = $$(24000 / {120000} × 100)$$% = 20%.

Ans: B

Percentage of students failed in both subjects = 100 – (80 + 85 – 75)

                                                                    = 10%.

10% of students = 40

Therefore, Number of students = 400.

Ans: C

Clearly, the numbers which have 1 or 9 in the unit’s digit, have squares that end in the digit 1. Such numbers from 1 to 70 are 1, 9, 11, 19, 21, 29, 31, 39, 41, 49, 51, 59, 61, 69.

Number of such numbers = 14.

Therefore, Required percentage = $$(14 / {70} × 100)$$% = 20%.

Ans: B

Quantity of alcohol in 5 litres solution = 20% of 5 litres = 1 litres.

Quantity of alcohol removed = 20% of 2 litres = 400 ml.

Quantity of alcohol in new solution = (1000 – 400) ml. = 600 ml.

Therefore, Strength of alcohol in new solution = $$(600 / {5000} × 100)$$% = 12%.