+1 vote
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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)
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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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