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- Question
P, Q and R secured 45%, 50% and 60% marks respectively in Biology. M?s marks in Biology is 12.5 more than P?s marks and 4 less than R?s marks. Find out the individual marks of four students. A. For the students, total marks obtained for Biology is 311.5. B. Total of M?s and P?s marks in Biology is 147.5. C. R has obtained 84 marks.
Options- A. Only C
- B. Only A & B
- C. All are required
- D. None of the statements is required
- Correct Answer
- None of the statements is required
ExplanationFrom the given data,
(60 - 45)% = 12.5 + 4
15% = 16.5
=> 100% = ?
100% = 16.5 x 100/15 = 110Hence, P = 45% of 110 = 45x110/100 = 49.5
Q = 50% of 110 = 55
R = 60% of 110 = 60 x 110/100 = 66
M = 12.5 + 49.5 = 62 or 66 - 4 = 62Hence, no statement is required to answer.
- 1. The marked price of an article is Rs. 5000. But due to a special festive offer a certain percent of discount is declared. Mr. X availed this oppurtunity and bought the article at reduced price. He then sold it at Rs. 5000 and thereby made a profit of 11 1/9%. The percentage of discount allowed was?
Options- A. 10
- B. 10/3
- C. 15/2
- D. 100/9 Discuss
- 2. There are 1400 students in a school, 25% of those wear spectacles and 2/7 of those wearing spectacles are boys. How many girls in the school wear spectacles?
Options- A. 250
- B. 100
- C. 200
- D. 300 Discuss
- 3. Raman spends 80% of his income. If his income is increased by 25% and the expenditure increase by 10%, then what will be the percentage increase in his savings?
Options- A. 17
- B. 70
- C. 77
- D. 85 Discuss
- 4. The marked price of a shirt is Rs 1280. If the shirt is being sold for Rs 900, then what is the discount percentage?
Options- A. 31.31
- B. 25.57
- C. 29.68
- D. 34.36 Discuss
- 5. a% of b + b% of a = ______
Options- A. 2a% of b
- B. 2a% of 2b
- C. 2a% of 2a
- D. 2b% of 2b Discuss
- 6. Dot cabs company provides cabs for software employees. The company has 8 Swift dzires, 6 Scorpios, 7 Innovas and few small cars. If Swift dzire makes one fourth of the total fleet, how many small cars are there in the company ?
Options- A. 9
- B. 10
- C. 11
- D. 12 Discuss
- 7. The payment per hour for a daily-wages employee is increased by 33.33 and the working time is reduced by 33.33%. What is the percentage change in the employee's income ?
Options- A. 11.11% decrease
- B. 21.11% increase
- C. 11.11% increase
- D. 21.11% decrease Discuss
- 8. Population of a colony of mosquitoes is increasing by 20% per day. If the population on Monday was 3000, on which day of that week the population would be 5184 ?
Options- A. Thursday
- B. Friday
- C. Tuesday
- D. Monday Discuss
- 9. Three strategies P, Q and R have been initiated for cost cutting in a company producing respectively 20%, 30% and 10% savings. Assuming that they operate independently, what is the net saving achieved ?
Options- A. 49.6%
- B. 50.4%
- C. 33.67%
- D. 66.66% Discuss
- 10. An individual deposited 20% of 25% of 30% of what he had into his account with a bank. If he deposited Rs.750, how much was he having initially with him before depositing ?
Options- A. Rs. 38000
- B. Rs. 47000
- C. Rs. 50000
- D. Rs. 35000 Discuss
Percentage problems
Search Results
Correct Answer: 10
Correct Answer: 250
Correct Answer: 85
Correct Answer: 29.68
Correct Answer: 2a% of b
Correct Answer: 11
Explanation:
Given the company has 8 SD + 6 SRP + 7 IN = 21 cars + 'x' small cars.
Given SD makes 1/4 th of the total fleet.
=> 8 = 1/4 (21 + x)
=> 32 = 21 + x
=> x = 11
Therefore, the company has 11 small cars.
Correct Answer: 11.11% decrease
Explanation:
If earlier he is getting Rs. 1 per hr and working for 1 hr, income = Rs. 1
Now he is getting Rs 1.3333 per hr and working for 0.66667 hrs
Then income for 0.66667 hrs = Rs. 0.8889.
If payment per hr is increased by 33.33 % and working hours dereased by 33.33%, then 11.11 % decrease in income.
Correct Answer: Thursday
Explanation:
Given monday population = 3000
Per day 20% increase in population.
Tuesday population = 3000 + 3000x20/100 = 3000 + 600 = 3600
Wednesday population =3600 + 3600x20/100 = 3600 + 720 = 4320
Thursday population = 4320 + 4320x20/100 = 4320 + 864 = 5184
So that day is Thursday.
Correct Answer: 49.6%
Explanation:
As these three strategies P, Q and R are independent so these will cut cost one after the other.
If initial cost is Rs 100, then
20% cost is cut after initializing strategy P, then cost will remain 80% = 80
further 30% cost is cut after strategy Q, then cost will remain 70% of 80 = 56
further 10% cost is cut after strategy R, then cost will remain 90% of 56 = 50.4
Thus final cost remains 50.4 % of the original cost. Hence net saving is 100 - 50.4 = 49.6 %.
Correct Answer: Rs. 50000
Explanation:
Let 'x' be the amount he had in the bank.
=> 20/100(25/100(30/100(x))) = 750
x = 750 x 8000/120 = Rs. 50000
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