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Percentage

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Aptitude miscellaneous
  1. A student multiplied a number by
    3
    		instead of
    5
    53

    What is the percentage error in the calculation ?
    1. 44%
    2. 34%
    3. 54%
    4. 64%
Correct Option: D

Let p be the multiplicand.

∴ Error =
5
p -
3
p
35

Error =
25p - 9p
 =
16p
1515

∴ Percentage error =
16p
× 100
15
5
p
3

∴ Percentage error =
16p
×
3
× 100 = 64%
155p


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