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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
35 : 10 = 35⁄10 = (35⁄10 x 100 ) % = 350 %
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 - 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 = 4⁄5p Therefore, 4 [p2 + (4⁄5p)2] = 656 41⁄25p2 = 164 p = 10 other number, q = 80.
Q 4 - Two tailors Rajiv and Raman are paid a total of Rs. 550 per week by their employer. If Rajiv is paid 120% of the sum paid to Raman, then how much is Raman paid per week?
Answer : A
Explanation
Let p be the sum paid to Raman per week. Then, p + 120% of p = 550 Therefore, p = 250 after solving the above equation. Raman is paid Rs. 250 per week.
Q 5 - The monthly salary of Abdul is Rs 60000. He spend 20% of it on the education of his children, 25% on house rent, 5% on travels, 30% on food, 8% on miscellaneous items and rest he saves for the future. Find his savings.
Answer : B
Explanation
Total expenditure = (20 + 25 + 5 + 30 +8)% = 88% Savings = 100% - 88% = 12% => His savings = 12/100 * 60000 = 7200
Q 6 - The population of a state is counted after every three years. It is found that the population each time is increased by 20% as compared to the previous count. If the population in the year 1998 was 42 lakhs, what will be the population in the year 2007 in lakhs?
Answer : B
Explanation
Since population is counted after every three years, there will be three countings between 1998 and 2007. ∴ Population in 2007 = 42(1 + 20/100)3 = 42(6/5)3 = 42 (216/125) = 72.576 lakhs
Q 7 - In an election the losing candidate gets 20% of the votes polled is defeated by 12000 votes. The number of votes polled by winning candidate is
Answer : C
Explanation
Let the votes polled by the winning candidate be x, then (x-12000) =20%of (x+(x-12000)) x=16000
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 : C
Explanation
Let x% of 24 = 0.72. Then, (x/100*24)=0.72= 72/100=>24x=72 =>x=3.
Q 10 - In a library, 40% of the books are in English, 40% of the remaining books are in Hindi, remianing books are in Oriya. If there are 4800 books in Hindi, then what is the toatl number of books in the library?
Answer : D
Explanation
Let the total number of books in the library be x. ∴ Number of books in English = 40% of x = 40/100 * x = 2x/5 Remaining books =x 2x/5 = 3x/5 Number of books in Hindi = 40% of 3x/5 = (40/100) * 3x/5 = 2/5 * 3x/5 = 6x/25 As per question, 6x/25 = 4800 ∴ x = 20000