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 1 of 14.
Shaik chashur said:
1 year ago
The formula for ERROR%= ((correct value - incorrect valuer)/ correct value) x 100.
(145)
Vedant Umeshsingh More said:
2 years ago
Let, the number be 60 we can consider any number,
3/5*60 = 36.
5/3*60 = 100.
error = 100 - 36 = 64.
For percentage = error/total * 100.
So, 64/100*100 = 64%.
3/5*60 = 36.
5/3*60 = 100.
error = 100 - 36 = 64.
For percentage = error/total * 100.
So, 64/100*100 = 64%.
(87)
Nippu said:
1 year ago
Sol:
Error %= (difference/original value)*100.
= [{(5/3)-(3/5)}/(5/3)]*100.
= 64%.
Error %= (difference/original value)*100.
= [{(5/3)-(3/5)}/(5/3)]*100.
= 64%.
(87)
AASHIKA said:
2 years ago
@All
Firstly,
Take a base number and multiply it;
5x3 = 15.
Then,
15 x 3/5 =9,
15 x 5/3 =25,
Difference 25-9 = 16.
16/25 x 100 = 64%.
Thanks.
Firstly,
Take a base number and multiply it;
5x3 = 15.
Then,
15 x 3/5 =9,
15 x 5/3 =25,
Difference 25-9 = 16.
16/25 x 100 = 64%.
Thanks.
(82)
Kesava kumar said:
1 year ago
It's very simple: 3/5/5/3 * 100 = 9/25 * 100 = 9*4 = 36.
Total percentage = 100.
100 - 36 = 64%.
Total percentage = 100.
100 - 36 = 64%.
(78)
Zubi said:
4 years ago
First of all, we have to know the formulae;
Error = true value - false value.
Error% = error/true value.
Now solution:-
Here, Error = (5/3)-(3/5)=16/15
So, Error% = (error/true value)*100,
= {(16/15)/(5/3)}*100,
= 64%.
Error = true value - false value.
Error% = error/true value.
Now solution:-
Here, Error = (5/3)-(3/5)=16/15
So, Error% = (error/true value)*100,
= {(16/15)/(5/3)}*100,
= 64%.
(57)
Madangopal Laturkar said:
3 years ago
Take base number and multiply it;
5 * 3 = 15.
Then,
15 * 3/5 = 9,
15 * 573 = 25,
Difference 25 - 9 = 16.
16/25 * 100 = 64%.
5 * 3 = 15.
Then,
15 * 3/5 = 9,
15 * 573 = 25,
Difference 25 - 9 = 16.
16/25 * 100 = 64%.
(49)
Priyanka bhumbar said:
9 months ago
Let a 45 no consider any number.
3/5 * 45 = 27
5/3 * 45 = 75.
Then the number is multiple into 100%.
27/75 * 100 = 36
100 - 36 = 64%.
3/5 * 45 = 27
5/3 * 45 = 75.
Then the number is multiple into 100%.
27/75 * 100 = 36
100 - 36 = 64%.
(46)
Rohan said:
2 years ago
Just take lcm of 5 and 3 which will be 15.
Now,
3/5 * 15 = 9 and 5/3 * 15 = 25.
Now subtract 25 by 9 25 - 9 = 16.
Now 16/25 * 100 = 64%.
Now,
3/5 * 15 = 9 and 5/3 * 15 = 25.
Now subtract 25 by 9 25 - 9 = 16.
Now 16/25 * 100 = 64%.
(43)
Khushi said:
2 years ago
Step1: 5/3 * 100 = 166.66~167
Step2: 3/5 * 100 = 60
Step3: Difference of 167 and 60 i.e; 107
Step4: Error value = (error/true) * 100,
(107/166) * 100 = 64%.
Step2: 3/5 * 100 = 60
Step3: Difference of 167 and 60 i.e; 107
Step4: Error value = (error/true) * 100,
(107/166) * 100 = 64%.
(36)
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