Percentage

6. How much is 80% of 40 is greater than 4/5 of 25? A)18 B)6 C)12 D)4 Answer : Option C Explanation: (80/100) * 40 – (4/5) * 25 32 - 20 = 12 7. 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: A)3000 B)2800 C)2700 D)2500 Answer : Option C Explanation: Number of valid votes are=80% of 7500=6000 valid votes got by other candidate= 45% of 6000 [45/100x6000]=2700. 8. A test has 20 questions. If John gets 80% correct, how many questions did John missed? A)3 B)2 C)6 D)4 Answer : Option D Explanation: The number of correct answers is 80% of 20 or 80/100 × 20 =>80/100 × 20 = 0.80 × 20 = 16% Total no. of question 20 and John got 16 correct answers the number of questions he missed is 20 − 16 = 4 9. Express 2/5 as rate percent: A)40% B)60% C)80% D)None of these Answer : Option A Explanation: 2/5 × 100 % = 200/5 % = 40 % 10. An increase of 30% in the price of oranges enables a man to buy 6 kg less for Rs. 300. Find the increased price per kg. A)Rs. 15 per kg B)Rs. 10 per kg C)Rs. 18 per kg D)Rs. 20 per kg Answer : Option A Explanation: The statement implies that the man has 30% of Rs. 300 available to spend on 6 kgs now. 30% of 300 = 30/100 x 300 = 90 So the increased price per kg is 90/6 = Rs. 15 per kg

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