Aptitude Percentage Test Paper 311) The population of a town is decreasing at a rate of 10% per annum. If the population two years ago was 20,000, what is the present population?
Correct answer; option (D) Explanation: Apply formula: =16200 12) Two candidates contested an election. The winning candidate scored 54% and won by 88 votes. If 58 votes were declared invalid, find the total number of votes polled in the election?
Correct answer; option (C) Explanation: Let the valid votes = x As per question; 54% of x46% of x = 88 8% of x = 88 ∴ Total votes polled = valid votes + invalid votes = 1100 + 58 = 1158 13) 1200 boys and 800 girls appeared in an examination. If 60% of the boys and 40% of the girls passed the examination, what is the percentage of candidates who failed in the examination?
Correct answer; option (A) Explanation: Number of students failed = 40 % of boys (1200) + 60 % of girls (800) = 480 + 480 = 960 Total number of students = 1200 + 800 = 2000 ∴ Percentage of candidates failed = * 100 = * 100 = 48 % 14) In an examination, 25% candidates failed in English and 35 % students failed in Math.If 15 % candidates failed in both, what is the percentage of candidates who passed in both the subjects?
Correct answer; option (C) Explanation: Apply formula: = 100  (x + y  z) x = 25% y = 35 % z = 15 % ∴ Required percentage of candidates = 100  (25 + 35  15) = 100  45 = 55% 15) Naresh's monthly income is reduced by 15%. By what percentage his monthly income must be increased so that it is again equal to his original monthly income?
Correct answer; option (D) Explanation: Let Naresh's monthly income is x. New income = x  15% x The income is reduced by ,So, should be added to his new income so that it becomes equal to his original monthly income. ∴ Required percentage increase in monthly income =* 100 Percentage Aptitude Test Paper 1 Percentage Aptitude Test Paper 2 Percentage Aptitude Test Paper 3 Percentage Aptitude Test Paper 4 Percentage Aptitude Test Paper 5 Percentage Aptitude Test Paper 6 Percentage Aptitude Test Paper 7 Percentage Aptitude Test Paper 8 Percentage Concepts
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