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Updated on: 01 Aug 2021, 22:08
Originally posted by rajatchopra1994 on 01 Aug 2021, 20:41.
Last edited by chetan2u on 01 Aug 2021, 22:08, edited 1 time in total.
Last edited by chetan2u on 01 Aug 2021, 22:08, edited 1 time in total.
Edited
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
84% (01:35) correct
16%
(01:54)
wrong
based on 183
sessions
History
Date
Time
Result
Not Attempted Yet
A student erroneously multiplied a number by 2/5 instead of 5/2. What is the percentage error in the calculation?
A. 24%
B. 54%
C. 74%
D. 84%
E. 94%
A. 24%
B. 54%
C. 74%
D. 84%
E. 94%
01 Aug 2021, 22:07
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rajatchopra1994
Please Post the options in a certain order.
Let the number be 10.
So actual answer should have been = \(\frac{5}{2}*10=25\)
But answer due to error = \(\frac{2}{5}*10=4\)
Error = 25-4=21
In % = \(\frac{21}{25}*100=84%\)
D
03 Oct 2024, 14:37
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