# Aptitude - Percentages Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to **Percentages**. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using **Show Answer** button. You can use **Next Quiz** button to check new set of questions in the quiz.

### Answer : D

### Explanation

60% of 264 =^{60}⁄_{100}x 264 = 158.4 50% of 234 =^{50}⁄_{100}x 234 = 117 70% of 164 =^{70}⁄_{100}x 164 = 114.8 20% of 1500 =^{20}⁄_{100}x 1500 = 300 15% of 1056 =^{15}⁄_{100}x 1056 = 158.4

### Answer : C

### Explanation

let z be the number. Then, 20% of z = 120 i.e (^{20}⁄_{100}x z) = 120 Therefore, z = 600 120% of z = (^{120}⁄_{100}x 600) = 720

Q 3 - In a competitive examination in Zone A, 6% candidates got selected from the total appeared candidates. Zone B had an equal number of candidates appeared and 7% candidates got selected with 80 more candidates got selected than A. What was the number of candidates appeared from each Zone?

### Answer : A

### Explanation

Let p be the number of candidates appeared from each zone. Then, 7% of p - 6% of p = 80 p = 80 x 100 = 8000

Q 4 - Siya secures 90%, 60% and 54% marks in test papers with 100, 150 and 200 respectively as maximum marks. The percentage of her aggregate marks is?

### Answer : D

### Explanation

Marks secured = [90% of 100 + 60% of 150 + 54% of 200] = 90 + 90 + 108 = 288 Total maximum marks = 100 + 150 + 200 = 450 Therefore aggregate marks of Siya is : (^{288}⁄_{450}x 100)% = 64%

Q 5 - The wheat production of a farmer increased from 180 quintals to 190 quintals. Find the percentage increase in production.

### Answer : D

### Explanation

Increase =190-180=10 %Increase=(10/180)*100 = 5.56%

Q 6 - A student has to secure minimum 35% marks to pass in an examination. If he gets 200 marks and fails by 10 marks, then the maximum marks are

### Answer : C

### Explanation

Let the maximum marks be x. According to the question, 35% of x = 200 + 10 Or, x = 600

Q 7 - 50% of a number when added to 50, is equal to a number .the number is

### Answer : A

### Explanation

50 + 50% of x =x x - 1/2x = 50 x=100

Q 8 - On decreasing the price of refrigerator by 25%, its sale is increased by 20% .what is the effect on revenue received by the shopkeeper?

### Answer : D

### Explanation

Let,price =Rs. 100, sale =Rs. 100 Then, sale value = 100*100=Rs.10000 New sale value =Rs.(75*120)=Rs.9000 Decrease %=1000/10000*100=10%

### Answer : B

### Explanation

x% of x = x/100 * x = 10% of y = y/10 => y = (x^{2}/100) * 10 = x^{2}/10

Q 10 - 72% of the students of a certain class took Biology and 44% took Mathematics. If each student took at least one subject from Biology or Mathematics and 40 took both, then the total number of students in the class is

### Answer : C

### Explanation

Let the number of students in the class be 100. ∴ Number of students in Biology = 72 and number of students in Maths = 44. ∴ Number of students opting for both the subjects = 72 + 44 – 100 = 16 When 16 students opt for both the subjects, total number of students = 100 ∴ When 40 students took both the subjects, total number of students = (100/16)*40 = 250