Percentage
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See all →- If 35% of a number is 147, what is 60% of that number? Answer: D. 252 Answer: (D) 252 Number = 147 × 100/35 = 420 . 60% of 420 = 252 . (Shortcut: 147 × 60/35 = 252 .) 1
- In an election between two candidates, the winner got 58% of the valid votes and won by 1,920 votes. What was the total number of valid votes? Answer: B. 12,000 Answer: (B) 12,000 Loser got 42%. Margin = 58% - 42% = 16% of valid votes = 1920 . Total = 1920/0.16 = 12000 . 1
- A number is first increased by 20% and then the result is decreased by 25%. What is the net percentage change in the number? Answer: C. 10% decrease Answer: (C) 10% decrease Let the number be 100. After +20%: 120. After −25%: 120 × 0.75 = 90 . Net change = 10% decr... 1
- The population of a town increased by 10% in the first year and decreased by 10% in the second year. If the population at the end of the second year is 39,600, what was it at the beginning of the first year? Answer: A. 40,000 Answer: (A) 40,000 P × 1.1 × 0.9 = 0.99P = 39600 , so P = 40000 . (A 10% rise followed by a 10% fall is a net 1% fall.) 1
- Ramesh spends 65% of his salary and saves the rest. His salary increases by 20% and his expenditure increases by 10%. By approximately what percent do his savings increase? Answer: A. 38.57% Answer: (A) 38.57% Take salary 100: expenditure 65, savings 35. New salary 120, new expenditure 71.5, new savings 48.5. In... 1
- The population of a village increases by 10% every year. If its present population is 12,100, what was its population 2 years ago? Answer: A. 10000 Answer: (A) 10000 Population 2 years ago = 12100/(1.1)² = 12100/1.21 = 10000 . 1