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- Question
- The marked price of brand A watches is 15% higher than its original price. Due to increased in demand, the price is further increased by 10%. How much profit will be obtained in selling the watches?
Options- A. 25%
- B. 35%
- C. 26.5%
- D. 27%
- Correct Answer
- 26.5%
ExplanationGiven that, a = 15% and b = 10%
According to the formula,
Required profit = a + b + (ab/100) %
= 15 + 10 + (15 x 10)/100 %
= (25 + 1.5)%
= 26.5%
= 26.5% - 1. A water pipe is cut into two pieces. The longer piece is 70% of the length of the pipe. By how much percentage is the longer piece longer than the shorter piece?
Options- A. 140%
- B. 400/3%
- C. 40%
- D. None of these Discuss
- 2. The difference between 78% of a number and 59% of the same number is 323. What is 62% of that number
Options- A. 1054
- B. 1178
- C. 1037
- D. 1159 Discuss
- 3. There are 1240 employee in an organization. Out of which, 25% are promoted. How many such employees are there who got promotion?
Options- A. 398
- B. 345
- C. 310
- D. 372 Discuss
- 4. If the price of petrol is increased by 20% by what percentage should the consumption be decreased by the consumer, if the expenditure on petrol remain unchanged?
Options- A. 162/3%
- B. 62/3%
- C. 8%
- D. 15% Discuss
- 5. A pot is filled with alcohal. 80% of alcohal is replaced by the same quantity of water. This process is done three times. Find the percentage of alcohal in this mixture of alcohal and water.
Options- A. 51.2%
- B. 29%
- C. 38%
- D. 49% Discuss
- 6. In an examination, 25% students failed in mathematics 20% students failed in Mathematics, 20% failed in Economics and 5% failed in both. Find the percentage of students who passed in both the subjects.
Options- A. 60%
- B. 45%
- C. 39%
- D. 62% Discuss
- 7. If the numerator of a fraction is increased by 200% and the denominator of the fraction is increased by 150%, the resultant fraction is 9/35 .What is the original fraction.
Options- A. 3/10
- B. 2/15
- C. 3/14
- D. 2/7 Discuss
- 8. Sahil got 45 marks in Hindi, 47 marks in Science, 49 marks in Mathematics, 45 marks in Social Science and 32 marks in English. The Maximum marks of each subject is 50. How much overall percentage of marks did he get?
Options- A. 75%
- B. 56.4%
- C. 78%
- D. 87.2% Discuss
- 9. A jogger desires to run a certain course in 1/4 less time than he usually takes. By What per cent must be increase his average running speed to accopplish the goal?
Options- A. 50%
- B. 20%
- C. 25%
- D. 331/3 Discuss
- 10. A students was awarded certain marks in an examination. However, after re-evaluation, his marks were reduced by 40% of the marks that were originally awards to him, so that the new score now became 96. How many marks did the student lose after re-evaluation?
Options- A. 58
- B. 68
- C. 63
- D. 56 Discuss
Percentage problems
Search Results
Correct Answer: 400/3%
Explanation:
Increase in percentage of longer pipe compared to shorter pipe
= [(70 - 30)/30] x 100%
= (40/30) x 100%
= 400/3 %
Correct Answer: 1054
Explanation:
Let the number be N.
According to the question,
(78 - 59)% of N = 323
? (19 x N)/100 = 323
? N = (323 x 100)/19 = 1700
? 62% of 1700 = (62/100) x 1700 = 1054
Correct Answer: 310
Explanation:
Require number = 1240 x (25/100)
= 310
Correct Answer: 162/3%
Explanation:
Here, a = 20%
Required percentage loss = [a / (100 + a)] x 100%
= [20/(100 + 20)] x 100%
= (20/120) x 100%
= 162/3%
Correct Answer: 51.2%
Explanation:
Let quantity of alcohal = 1000 L
Quantity of alcohal after 1st process = 80% of 1000 L = 800 L
Quantity of alcohol after 2nd process = 80% of 800 L = 640 L
Quantity of alcohol after 3rd process = 80% of 640 L = 512 L
? Required percentage = (512/1000) x 100 = 51.2%
Correct Answer: 60%
Explanation:
Here, x = 25, y = 20 and z = 5
According to the formula,
Required percentage = [100 - (25 + 20 - 5)]%
= [100 - (45 - 5)]% = (100 - 40)% = 60%
Correct Answer: 3/14
Explanation:
Let the fraction be P/Q.
Then, (P + 2P)/ Q + 3/2Q = 9/35
? (3P/5Q) x 2 = 9/35
? P/Q = (9/35) x (5/6) = 3/14
Correct Answer: 87.2%
Explanation:
Total marks obtained = [45 + 47 + 49 + 45 + 32] = 218
Maximum marks = 5 x 50 = 250
? overall percentage = (218/250) x 100% = 87.2%
Correct Answer: 331/3
Explanation:
Let usual speed and usual time taken by the jogger are D and T, respectively.
Let his new speed be D'. Then,
DT = (3D'/4)T
? D = 3D'/4
? D' = 4D/3
Thus, he has to increased his speed by
[(4D/3 - D) / D] x 100% .
= 331/3 %
Correct Answer:
Explanation:
Let a student was awarded in exam = N marks
According to the question,
After re-evaluation his score
? N - N x (40/100) = 96
? N - 2N/5 = 96
? 5N - 2N/5 = 96
? 3N/5 = 96
? N = (5 x 96)/3 = 5 x 32
? N = 160
So, a student was awarded by 160 marks in examination
? Reduced marks after re-evaluation = 160 - 96 = 64
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