Correct Answer - Option 3 : 11.11% loss
Given:
The cost price of 8 box = the selling price of 9 box
Formula Used:
Loss percentage = {(C.P – S.P)/C.P} × 100
Calculation:
Let the C.P of each box be Rs 1
C.P of 9 boxes = Rs. 9
C.P of 8 boxes = Rs. 8
S.P of 9 boxes = Rs. 8
Loss at 9 boxes = Rs. (9 – 8) = Rs. 1
Loss % = 1/9 × 100 = 100/9 % = 11.11%
∴ Loss% is 11.11%