# 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 - If one number is 80% of the other and 4 times the sum of their squares is 656, then the numbers are?

### Answer : B

### Explanation

Let one number is p and other q. The other number q will be 80% of p i.e. q =^{4}⁄_{5}p Therefore, 4 [p^{2}+ (^{4}⁄_{5}p)^{2}] = 656^{41}⁄_{25}p^{2}= 164 p = 10 other number, q = 80.

Q 4 - In an election between two candidates, one got 55% of the total valid votes, 20% of the votes were invalid. If the total number of votes was 7500, the number of valid votes that the other candidate got, was:

### Answer : D

### Explanation

Number of valid votes =^{80}⁄_{100}x 7500 = 6000 Valid votes polled by other candidate = (^{45}⁄_{100}x 6000) = 2700

Q 5 - Of the 1000 inhabitants of a town, 60% are males of whom 20% are literate. If, of all the inhabitants, 25% are literate, then what percent of the females of the town are literate?

### Answer : D

### Explanation

^{60}⁄_{100}x 1000 = 600 = number of males → 1000 - 600 = 400 = number of females Literates = 25% of 1000 = 250 Literate males = 20% of 600 = 120 Literate females = 250 - 120 = 130 Therefore, the percent of the females literate =^{130}⁄_{400}x 100 = 32.5%

Q 6 - A's salary is 50% more than that of B. How much percent is B's salary less than that of A?

### Answer : B

### Explanation

Required percentage = {50/(100+50)}*100% = 50/150 * 100 = 100/3

Q 7 - Water tax is increased by 30% but its consumption is decreased by 20%. Then, the increase or decreased in the expenditure of the money is

### Answer : D

### Explanation

Let tax =Rs.100 and Consumption = 100 units Original expenditure = Rs.100*100=Rs.10000 New expenditure=Rs.(130*80) =Rs. 10400 Increase in expenditure by 4 %

Q 8 - The estimation of a machine deteriorates at the rate of 10% for every annum. On the off chance that its present worth is Rs. 8100, what will be its worth following 3 years?

### Answer : B

### Explanation

Value of the machine after three years = Rs{81000*(1-10/100)^{3}} = 81000* 9/10*9/10*9/10 = Rs 59049

### Answer : B

### Explanation

Let's have x % of 2/7 = 1/35 => x/100 * (2/7) = 1/35 =>x = 1/35 * 7/2 * 100 = 10%

Q 10 - In a class of 60 children, 30% children can speak only English, 20% both Hindi and English and the rest of the children only Hindi. How many children can speak Hindi?

### Answer : A

### Explanation

Total number of children in the class = 60 Number of children who can speak only in English = 30% of 60 = (30/100)*60 = 18 Number of children who can speak both Hindi and English = 20% of 60 = (20/100)*60 = 12 ∴ Number of children who can speak only Hindi = 60 – 18 – 12 = 30 ∴ Number of children who can speak Hindi = 30 + 12 = 42