By selling an article for 1134. Anu suffers as much loss as she would have gained by selling it at 10% profit. If she sells it for 1354.50, then her profit percentage is :

let the cost price is 10unit
ATQ she loss as much as she would gained %
she sold at 9 unit
9 unit =1134rs
so cost price is 10 unit =1260
now she sold it 1354.50
profit 94.50
profit % (94.50/1260)*100=7.5

let cp=x
profit percentage=10%
p=sp-cp
=1134-x
10=[(1134-x) /x]*100
x=1030.90
when sp=1354.5
p=1354.5-1030.9
=323.6
profit percent=[323.6/1030.9]*100
=31.39%

If CP= x then (110x/100 -x) = (x-1134) => X=1260
Now, If SP=1354.50 then, %P= {(1354.50-1260)/1260}*100 =7.5

8.5