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- Question
- In a college election, a candidates secure 62% of the votes and is elected by majority of 144 votes. The total number of votes polled is?
Options- A. 600
- B. 800
- C. 925
- D. 1200
- Correct Answer
- 600
Explanation? (62% of N - 38% of N) =144
? 24% of N = 144
? N = (144 x 100)/24 = 600 - 1. Two numbers are less than a third number by 30%and 37% respectively. How much percent is the second number less than the first?
Options- A. 3%
- B. 4%
- C. 7%
- D. 10% Discuss
- 2. A number decreased to 72 1/ 2% gives 87. The number is?
Options- A. 58
- B. 110
- C. 120
- D. 135 Discuss
- 3. A number increased to 137 1/ 2% gives 33. The number is?
Options- A. 22
- B. 24
- C. 25
- D. 27 Discuss
- 4. A man donated 5% of his income to a charitable organisation and deposited 20% of the remainder in a bank. If he now has Rs. 1919 left, what is his income?
Options- A. Rs. 2558.60
- B. Rs. 2525
- C. Rs. 2500
- D. Rs. 2300 Discuss
- 5. Rakesh credits 15% of his salary in his fixed deposit account and spend 30% of the remaining amount on groceries. If the cash in hand is Rs. 2380, What is this salary?
Options- A. 35000
- B. 4000
- C. 45000
- D. 5000 Discuss
- 6. The price of sugar is increased by 20%. If the expenditure is not allowed to increased. Then ratio between the reduction in consumption and the original consumption?
Options- A. 1 : 3
- B. 1 : 4
- C. 1 : 6
- D. 1 : 5 Discuss
- 7. Water tax is increased by 20% but its consumption is decreased by 20%. Then the increase or decrease in the expenditure of the money is?
Options- A. No change
- B. 5% decrease
- C. 4% increased
- D. 4% decreased Discuss
- 8. 3 litres of water is added to 15 litres of a mixture of a 20% solution of alcohol in water. The strength of alcohol is now?
Options- A. 121/2%
- B. 162/3%
- C. 24%
- D. 16% Discuss
- 9. On deceasing the price of T.V. set by 30%. Its sale in increased by 20%. What is the effect on the revenue received by the shopkeeper?
Options- A. 10% increased
- B. 10% decreased
- C. 16% increased
- D. 16% decrease Discuss
- 10. The population of a town is 8000. It increases by 10% during first year and by 20% during the second year. The population after 2 years will be?
Options- A. 10400
- B. 10560
- C. 10620
- D. None of these Discuss
Percentage problems
Search Results
Correct Answer: 10%
Explanation:
Let third number be N
Then, first number = 70% of N = 7N/10 and,
Second number = 63% of N = 63N/100
Difference = 7N/10 - 63N/100 = 7N/100
? Required percentage = (7N/100) x (10/7N) x 100 % = 10%
Correct Answer: 120
Explanation:
? 721/2% of N = 87
? {(145/2) x N} / 100 = 87
? N = (87 x 2 x 100) / 145 = 120
Correct Answer: 24
Explanation:
? 1371/2% of N = 33
? {(275/2) x N} / 100 = 33
? N = (33 x 2 x 100) / 275 = 24
Correct Answer: Rs. 2525
Explanation:
Let his income be Rs. N, then N - 5% of N - 20% of 95% of N = 1919
? N - N/20 - (20 x 95 x N)/(100 x 100) = 1919
? N - N/20 - 19N/100 = 1919
? 100N - 5N - 9N = 191900
? N = 191900 / 76 = 2525
Correct Answer: 4000
Explanation:
Let salary be Rs. A, then A - 15 % of A - 30% of 85% of A = 2380
? A - 15A/100 - (30 x 85 x A)/(100 x 100) = 2380
? 200A - 30A - 51A = 2380 x 200
? 119A = 2380 x 200
? A = (2380 x 200)/199 = 4000
Correct Answer: 1 : 6
Explanation:
Reduction in consumption = (20/120) x 100% = 50/3%
? Reduction in consumption /Original consumption = (50/3) / 100 = 1/6 = 1 : 6
Correct Answer: 4% decreased
Explanation:
Let tax = Rs. 100 and Consumption = 100 units
Original expenditure = Rs. (100 x 100) = 10000
New expenditure = Rs. (120 x 80) = Rs. 9600
? Decreased in expenditure = (400 x 100)/1000 % = 4%
Correct Answer: 162/3%
Explanation:
Alcohol in 15 litres =(20 x 15)/100 litres = 3 litres
Now, alcohol in 18 litres = 3 litres
? strength of alcohal =(3/18) x 100 % = 162/3%
Correct Answer: 16% decrease
Explanation:
Let price = Rs. 100, sale = 100
Then sale value = Rs. (100 x 100) = Rs. 10000
New sale value = Rs. (70 x 120) = Rs. 8400
Decrease% = (1600/10000) x 100 % = 16%
Correct Answer: 10560
Explanation:
Population after 2 years
=8000(1 + 10/100) (1 + 20/100)
= (8000 x 11/10 x 6/5) = 10560
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