A trader sells two bullocks for Rs. 8400 each, neither losing nor gaining in total. If he sold of one of the bullocks at a gain of 20%, the other is sold at a loss of = ?

Answer: Option C

Total selling price of two bullocks = 8400 + 8400 = 16800
∴ Cost price of first bullock = 8400 × $$\frac{100}{120}$$ = Rs. 7000
According to the question, there is no profit or loss.
∴ Cost price of second bullock = 16800 – 7000 = Rs. 9800
Selling price of second bullock = Rs. 8400
∴ Loss = 9800 – 8400 = Rs. 1400
∴ Percentage loss on second bullock
$$\begin{array}{rl}& =\frac{1400}{9800}\times 100\%\\ & =\frac{100}{7}\%\\ & =14\frac{2}{7}\%\end{array}$$