Correct Answer - Option 4 : Rs. 10 loss
Given:
Selling price (S.P.) of a radio = 990 Rs.
Profit = 10%
Second selling price (S.P.) of a radio = 890 Rs.
Formula used:
Cost price (C.P.) = S.P. × 100/(100 + profit%)
Calculation:
C.P. of radio = 990 × 100/(100 + 10) = 900
Second S.P. = Rs.890
Loss = C.P. - S.P.
Loss = 900 - 890 = Rs.10
∴ The loss is Rs.10.