Aptitude - Percentages Online Quiz


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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.

Questions and Answers

Answer : D

Explanation

60% of 264 = 60100 x 264 = 158.4
50% of 234 = 50100 x 234 = 117
70% of 164 = 70100 x 164 = 114.8
20% of 1500 = 20100 x 1500 = 300
15% of 1056 = 15100 x 1056 = 158.4

Q 2 - If 120 is 20% of a number, then 120% of that number will be?

A - 120

B - 620

C - 720

D - 20

Answer : C

Explanation

let z be the number.
Then, 20% of z = 120 i.e (20100 x z) = 120
Therefore, z = 600
120% of z = (120100 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?

A - 8000

B - 9000

C - 7600

D - 9800

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?

A - 72%

B - 70%

C - 75%

D - 64%

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 : (288450x 100)% = 64%

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

A - 4.56%

B - 5.00%

C - 5.50%

D - 5.56%

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

A - 300

B - 400

C - 500

D - 600

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

A - 100

B - 125

C - 140

D - 150

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?

A - 25%

B - 20%

C - 15%

D - 10%

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%

Q 9 - x% of x is the same as 10% of

A - x/10

B - x2/10

C - x3/10

D - x4/10

Answer : B

Explanation

 x% of x = x/100 * x = 10% of y = y/10
=> y = (x2/100) * 10 = x2/10

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

A - 200

B - 240

C - 250

D - 320

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


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