Discussion
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- Question
A student multiplied a number by 2/5 instead of 5/2. What is the percentage error in evaluation ?
Options- A. 52%
- B. 64%
- C. 84%
- D. 77%
- Correct Answer
- 84%
ExplanationLet the number be 'x'
Then, according to the given data,
=
= 84%
- 1. 83% of 2350 = ?
Options- A. 1889.95
- B. 1912.35
- C. 1875.25
- D. 1950.50 Discuss
- 2. A Shopkeeper charges sales tax of x% upto Rs.2,000 and above it he charges y%. A customer pays total tax of Rs 320, when he purchases the goods worth Rs. 6,000 and he pay's the total tax of Rs. 680 for the goods worth Rs. 12,000. The value of (x-y) is:
Options- A. 0
- B. -2
- C. -4
- D. 5 Discuss
- 3. 30% of 500 rupees is?
Options- A. Rs. 180
- B. Rs. 150
- C. Rs. 120
- D. Rs. 240 Discuss
- 4. A house owner wants to get his house painted. He is told that this would require 45 kg of paint allowing 6% wasting. And if the paint is available in 4 kg tins only, the number of tins required for painting the house is ?
Options- A. 12
- B. 13
- C. 11
- D. 10 Discuss
- 5. The percentage discount offered for "Buy 6 get 1 free is" ?
Options- A. 85.78 %
- B. 58. 48 %
- C. 19.25 %
- D. 14.285 % Discuss
- 6. In a test, minimum passing percentage for girls and boys is 35% and 40% respectively. A boy scored 483 marks and failed by 117 marks. What is the minimum passing marks for girls ?
Options- A. 625
- B. 525
- C. 425
- D. 325 Discuss
- 7. If 25% of a number is subtracted from a second number, the second number reduces to its four-sixth. What is the ratio of the first number to the second number ?
Options- A. 4:3
- B. 2:3
- C. 3:2
- D. 5:3 Discuss
- 8. Madhu got 32% of the maximum marks in a Bank examination and failed by 8 marks. However, Kumar who took the same examination got 42% of the total marks and got 16 marks more than the cut-off marks. What was the cut-off marks in the examination ?
Options- A. 76.8
- B. 86.8
- C. 78.8
- D. 84.8 Discuss
- 9. 80% of 900 + 162 x 4 x ? = 113 - 99
Options- A. 0.5
- B. 1
- C. 4
- D. 0 Discuss
- 10. A jar can 20 litre milk. From the jar, 4 litres milk was taken out and replaced with an equal quantity of water. If 4 litres of the newly formed mixture is taken out of the can, then what is the final quantity of milk left in the can?
Options- A. 14.5 lit
- B. 12.8 lit
- C. 11.6 lit
- D. 10.46 lit Discuss
Percentage problems
Search Results
Correct Answer: 1950.50
Explanation:
Correct Answer: -2
Explanation:
and
x = 4 and y = 6
x-y = -2
Correct Answer: Rs. 150
Explanation:
Given 30% of 500
Hence, 30% of Rs. 500 = Rs. 150.
Correct Answer: 12
Explanation:
Given 45 kg for painting
And 6% 0f 45 for wasting => 6x45/100 = 2.7 kg
Now total paint required = 45+2.7 = 47.7 kgs
But tins are available in only 4kgs
Then, no. of tins req = 47.7/4 = 11.4 => 12 tins
Correct Answer: 14.285 %
Explanation:
Total Items = 7
Discounted = 1
Percentage = 1/7 x 100
= 14.285%
Correct Answer: 525
Explanation:
Given 40% minimum passing marks for boys = 483 + 117 = 600
=> 1% = 600/40
=> 100% = 600 x 100/40 = 1500
Minimum passing marks for girls = 35% of 1500 = 35 x 1500/100 = 525.
Correct Answer: 4:3
Explanation:
Let the numbers be p & q
q-p/4 = 4q/6
=> q-4q/6 = p/4
=> 2q/6 = p/4
=> p/q = 4/3
Correct Answer: 84.8
Explanation:
Let 'M' be the maximum marks in the examination.
Therefore, Madhu got 32% of M = 32M/100 = 0.32M
And Kumar got 42% of M = 42M/100 = 0.42M.
In terms of the maximum marks Kumar got 0.42M - 0.32M = 0.1M more than Madhu. ---- (1)
The problem however, states that Kumar got 16 marks more than the cut-off mark and Madhu got 8 marks less than the cut-off mark. Therefore, Kumar has got 16 + 8 = 24 marks more than Madhu. ---- (2)
Now, Equating (1) and (2), we get
0.1M = 24 => M = 24/0.1 = 240
'M' is the maximum mark and is equal to 240 marks.
We know that Madhu got 32% of the maximum marks.
Therefore, Madhu got 32 x 240/100 = 76.8 marks.
We also know that Madhu got 8 marks less than the cut-off marks.
Therefore, the cut-off marks will be 8 marks more than what Madhu got
= 76.8 + 8 = 84.8.
Correct Answer: 0.5
Explanation:
80x900/100 + 256 x 4 x ? = 1331 - 99
720 + 1024 x ? = 1232
? = 1232 - 720/1024
? = 512/1024 = 0.5
? = 0.5
Correct Answer: 12.8 lit
Explanation:
This can be solved as
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