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