Aptitude - Percentage - Discussion
Discussion Forum : Percentage - General Questions (Q.No. 9)
9.
| A student multiplied a number by | 3 | instead of | 5 | . |
| 5 | 3 |
What is the percentage error in the calculation?
Answer: Option
Explanation:
Let the number be x.
| Then, error = | 5 | x - | 3 | x = | 16 | x. |
| 3 | 5 | 15 |
| Error% = |  |
16x | x | 3 | x 100 |  % = 64%. |
| 15 | 5x |
Discussion:
134 comments Page 3 of 14.
Venkatesh said:
4 years ago
Thank you @Srihari.
(3)
Bradley S said:
1 year ago
Here, I use ratio and proportion. The question states using a number of some value and multiplying by 3/5 and 5/3. what is the difference in percentage?
3/5 = 60%. 5/3 = 166.6%.
The percentage difference is arguably 107%. If you use a predetermined value of 10.
The equations are 3/5 x 10 = .6 and 5/3 x 10 = 1.66. The calculated % is 1.66/.6 = 2.76 or 276%.
This is the true difference in % values no matter what number you multiply them by. 276% x 0.6 = 1.66.
3/5 = 60%. 5/3 = 166.6%.
The percentage difference is arguably 107%. If you use a predetermined value of 10.
The equations are 3/5 x 10 = .6 and 5/3 x 10 = 1.66. The calculated % is 1.66/.6 = 2.76 or 276%.
This is the true difference in % values no matter what number you multiply them by. 276% x 0.6 = 1.66.
(3)
R.SRAVAN said:
2 decades ago
If error came a negative value then what is the solution?
(1)
Moorthy said:
2 decades ago
Then, error = 5/3 x - 3/5 x = 16/15x.
how to came this term?
how to came this term?
(1)
Jananipriya.p. said:
2 decades ago
What is the logic behind the term (16x/15 * 3/5x) ?
(1)
Kishna said:
1 decade ago
Thanks Sreekutty.
(1)
Chandu said:
4 years ago
5/3 - 3/5 = (5(5)-3(3))/15 = 16/15.
(16/15)/(3/5) x 100 = 64%.
(16/15)/(3/5) x 100 = 64%.
(1)
Prawin said:
2 decades ago
error = true vlue- false value
error=(5/3)x-(3/5)x
error=(5/3)x-(3/5)x
Srihari said:
2 decades ago
No need of taking x. The difference of two nos become 16/15.
Then the percentage of 16/15 in the true value 5/3 is 64%.
16/15
------ x 100 = 64%. Thats logic Jananipriya.
5/3
Then the percentage of 16/15 in the true value 5/3 is 64%.
16/15
------ x 100 = 64%. Thats logic Jananipriya.
5/3
Jananipriya.P. said:
2 decades ago
Thank you Hari!
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