+1 vote
in Mathematics by (11.6k points)
A) Rs 50

B) Rs 40

C) Rs 30

D) Rs 15
by (11.6k points)
Please explain it.
by (15.0k points)
your options are wrong

1 Answer

+2 votes
by (15.0k points)
selected by
Best answer

Let   the   Original sum is   Rs x 

So   according   to   the   question ,   

After   5%   of   deduction   we   get ,   x - 5x/100 = 19x/20 and  

again   10 %   deduction   we   get ,   

19x/20 - 19x/20 x 10/100

= 19x/20 - 19x/200

= (190x-19x)/200

= 171x/200

and   it   is   given   as ,   171x/200 = 171 

So   x   =  200

So, The original sum was Rs 200

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