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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
Let the unknown value is p, then p = (35⁄100 x 980 + 150⁄100 x 850) - (40⁄100 x 1640 ) p = 343 + 619 = 962
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 - Two numbers A and B are such that the sum of 5% of A and 4% of B is two-third of the sum of 6% of A and 85 of B. Fin the ratio of A:B.
Answer : A
Explanation
5⁄100A + 4⁄100B = 2⁄3 (6⁄100A + 8⁄100B) 1⁄20A + 1⁄25B = 1⁄25A + 4⁄75B A⁄B = 4⁄3
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 - The price of potatoes came down to Rs 12 per kg from Rs 16 per kg. Find the percentage decrease.
Answer : A
Explanation
decrease = 16-12 = 4 => %decrease = 4/16 * 100 = 25%
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 - 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 - The population of a town is 176400. It increases annually at the rate of 5% p.a. What was it 2 years ago?
Answer : A
Explanation
Population 2 years ago = 176400/(1+5/100)2 =(176400*20/21*20/21)=160000.
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,1.3x0.8x=2500 Or,0.5x=2500 Or,x=5000
Q 10 - When the price of a product was increased by 15%, the number sold was decreased by 20%. What was the net effect?
Answer : C
Explanation
Let original price of the product = Rs 100 and number of products originally sold = 100. Original sale proceeds = 100*100 = Rs 10,000/- New sale proceeds = 115*80 = Rs 9200 Decrease = 10,000 9,200 = 800/- ∴ Decrease % = (800/1000)*100 = 8%