Question

a student multiplied a number by 3/5 instead of 5/3. what is thee percentage error

Answer 1

Answer:

64%

Step-by-step explanation:

(5 / 3 – 3 / 5 ) / ( 5 / 3 )

=16 / 15 x 3 / 5

=16 / 25

=64%

∴ his percentage error is  = 64%

Answer 2

let the no. be x
on wrong multi plication he got =3x/5
instead of =5x/3
decrece in no=5x/3-3x/5
=25x-9x/15
=16x/15
%decrease=16x/15/5x/3*100
=16/25*100=64%
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