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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 : A
Explanation
(0.01⁄0.1 x 100 )% = (1 x 10)% = 10%
Q 2 - It costs Rs. 1 to photocopy a sheet of paper. However, 2% discount is allowed on all photocopies done after first 1000 sheets. How much will it cost to copy 5000 sheets of paper?
Answer : C
Explanation
Cost = 1 x 1000 + (100-2)% of 1 x 4000 = 1000 + (98)% of 4000 = 1000 + 3920 = Rs. 4920
Q 3 - Saurav went to the stationery and bought things worth Rs. 25, out of which 30 paise went on sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?
Answer : C
Explanation
Let p be the amount of taxable purchases. Then, 6⁄100 p = 30⁄100 p = (30⁄100 x 100⁄6) = 5 The cost of tax free items: [25 - (5 + 0.30)] = Rs. 19.70
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 : (288⁄450x 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 rectangle has width 'a' and length 'b'. If the width is decreased by 20% and length is increased by 10%, what is the area of the new rectangle in percentage compared to 'ab'?
Answer : A
Explanation
New width = (80/100)*a = 4a/5 New length = (110/100)*b = 11b/10 Area of new rectangle = 4a/5 * 11b/10 = 22ab/25 ∴ Area of new rectangle in percentage compared to ab = (22ab/25)/25 * 100 = 88%
Answer : D
Explanation
Let 15% of 180=50% of x Then 15/100*180=50/100*x =>x=54
Q 8 - The price of an article is cut by 20% .to restore it to the former value, the new price must be increased by
Answer : B
Explanation
Let original price = Rs. 100 Reduced price = Rs. 80 Increase on Rs.80=Rs.20 Increase on Rs. 100=20/80*100%=25%
Q 9 - In an examination, 60% of the candidates passed in English and 70% of the candidates passed in Mathematics but 20% failed in both the subjects. If 2500 candidates passed in both the subjects, the number of candidates that appeared in the examination was:
Answer : D
Explanation
Let, the total number of candidates = x Hence, number of candidates passed in English = 0.6x Similarly, number of candidates passed in Mathematics = 0.7x Number of candidates failed in both the subjects = 0.2x Number of candidates passed in at least one of the subjects =x-0.2x = 0.8x ∴ 0.6x+0.7x-2500=0.8x Or,1.3x–0.8x=2500 Or,0.5x=2500 Or,x=5000
Q 10 - After spending 15% on raw material, 30 % on machinery, 15% on furniture, 10% on machinery, Harish had a balance of 1300. The money with him was:
Answer : D
Explanation
x-(15% of x+30% of x+15% of x+10% of x)=1300 x-70% of x=1300 =>x=4333