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- Question
- In a class of 40 students and 5 teachers, each student got sweets that are 15% of the total number of students and each teacher got sweets that are 20% of the total number of the students. How many sweets were there?
Options- A. 280
- B. 240
- C. 320
- D. 360
- Correct Answer
- 280
ExplanationNumber of sweets received by every students = 15% of 40 = (40 x 15)/100 = 6
? Number of sweets received by 40 students = 40 x 6 = 240
Number of sweets received by each teacher = 20% of 40 = (40 x 20)/100 = 8
? Number of sweets received by 5 teachers = 8 x 5 = 40
? Total number of sweets = 240 + 40 = 280 - 1. Due to a 25% increased in the price of rice per kilogram, a person is able to purchase 20 kg less for ? 400. What is the increased price of rice per kilogram?
Options- A. ? 5
- B. ? 6
- C. ? 10
- D. ? 4 Discuss
- 2. The price of rice is reduced by 5%. How many kilograms of rice can now be bought for the money, which was sufficient to buy 50 kg of rice earlier?
Options- A. 52.63 kg
- B. 50.40 kg
- C. 42.30 kg
- D. 60.50 kg Discuss
- 3. A reduction of 20% in the price of wheat enables a person to buy
3.5 kg more wheat for ? 770. The original price of rice is?
Options- A. ? 55 per kg
- B. ? 45 per kg
- C. ? 65 per kg
- D. ? 37 per kg Discuss
- 4. In an office, 40 % of the staff is female. 40% of the female and 60% of the male voted for me. The percentage of votes I got was
Options- A. 24%
- B. 42%
- C. 50%
- D. 52% Discuss
- 5. In an examination, it is required to get 296 marks out of aggregate marks to pass. A students gets 222 marks and is declared failed by 10% marks . What are the maximum aggregate marks a students can get?
Options- A. 830
- B. 810
- C. 780
- D. 740 Discuss
- 6. Fresh grapes contain 80% water, while dry grapes contain 10% water. If the weight of dry grapes is 500 kg, then what is its total weight when it is fresh?
Options- A. 2350 kg
- B. 2085 kg
- C. 2555 kg
- D. 2250 kg Discuss
- 7. The price of rice decreased by 6.25% and because of this reduction. Vandana is able to buy 1 kg more for ?120. Find the reduce rate of rice.
Options- A. ? 7.50 per kg
- B. ? 9 per kg
- C. ? 5.50 per kg
- D. ? 19 per kg Discuss
- 8. Wheat is now being sold at ? 27 per kg. During last month, its cost was ? 24 per kg. Find by how much per cent a family reduced its consumption, so as to keep the expenditure fixed.
Options- A. 10.2%
- B. 12.1%
- C. 12.3%
- D. 11.1% Discuss
- 9. A marketing manager is able to manage an average of Rs240 per week during 40h week . But in the final week of the month, his rates are increased by 50%. Then find out the commission the marketing manager makes in that week, if he puts in 60h during that final week?
Options- A. 500
- B. 540
- C. 520
- D. 600 Discuss
- 10. A candidate attempted 12 questions and secured full marks in all of them. If he obtained 60% in the test and each questions carried equal marks, then what was the total number of questions in the test?
Options- A. 36
- B. 30
- C. 25
- D. 20 Discuss
Percentage problems
Search Results
Correct Answer: ? 5
Explanation:
Increase in the price of rice = 25%
? increased in ? 400 = 25% of ? 400
= 400 x (25/100) = ? 100
? Increased in rate of rice in 25%, there are 20kg less rice in ? 400 i.e., rate of 20 kg rice
= ? 100
= Rate of 1kg rice = 100/20 = ? 5
? Increased price of rice = ? 5 per kg
Correct Answer: 52.63 kg
Explanation:
Let original price be ? 100 per kg.
Money required to buy 50 kg of rice = ? (100 x 50) = ? 5000
New price = (100 - 5) = ? 95 per kg
? Quantity of rice bought = (5000/95) kg = 52.63 kg
Correct Answer: ? 55 per kg
Explanation:
Here, R = 20%, A = 3.5 kg and P = ? 770
According to the formula ,
Actual price of rice = [PR /(100 - R)] A
= [(20 x 770) / (100 - 20)] x 3.5
= [(20 x 770) / (80 x 3.5)
= ? 55
Correct Answer: 52%
Explanation:
Let the total number of staff be 100.
? Female staff = 40
Male staff = (100 - 40) = 60
Votes cast by females = (40/100) x 40 = 16
Votes cast by males = (60/100) x 60 = 36
Votes cast by both (males + females) = 16 + 36 = 52
? Percentage votes obtained = 52%
Correct Answer: 740
Explanation:
Let the maximum aggregate marks be N
According to the question,
10% of N = 296 - 222
? N/10 = 74
? N = (74 x 10) = 740
Correct Answer: 2250 kg
Explanation:
Let the weight of fresh grapes be W.
Quantity of water in it = (80/100) x W = 4W/5
Quantity of pulp in it = W - (4W/5) = W/5
Quantity of water in 500 gm dry grapes
= (10/100) x 500 = 50 kg
? Quantity of pulp in it = (500 -50) = 450 kg
W/5 = 450
? W = 2250 kg
Correct Answer: ? 7.50 per kg
Explanation:
Let original rate of rice be ? x per kg
Reduced rate = ? [(100 - 6.25) x (1/100) x W]
= ? 15W/16 per kg
According to the question
120/(15W/16) - 120/W = 1
? (120 x 16)/15W - 120/W = 1
? 120 x 16 - 1800 = 15W
? 128 - 120 = W
? W = ? 8 per kg.
? Reduced rate = ? (15/16) x 8 per kg
=? 7.50 per kg
Correct Answer: 11.1%
Explanation:
Old price of rice = ? 24/kg
New price of rice = ? 27 per/Kg
? increased in price of rice = New price - Old prices = 27 - 24 = ? 3/kg
? increased percentage in price = (3/24) x 100
= 121/2 %
Now, reduction in consumption, so as to keep the expenditure fixed.
According to the formula,
= [a/(100 + a)] x 100 %
=[1.25/(100 +12.5)] x 100%
= 11.1%
Correct Answer: 540
Explanation:
Average rate per hr = 240/40 = Rs6/hr
In last week, his rate per hour increases by 50%,
so in the last week, his hourly rate = Rs.6 x (1+50%)= Rs.9
Total hour spent in final week = 60h
? Total commission = 60h x Rs.9/hr = Rs.540
Correct Answer: 20
Explanation:
Let the number of question be Y.
60% of Y = 12
60Y / 100 =12
Y = 20
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