C.P. of first painting = Rs.5600
Gain % = 15%
∴ S.P. = \(\frac{C.P.(100 + gain\%)}{100}\)
\(=Rs. \frac{5600(100 + 15)}{100}\)
\(=Rs. 5600 \times \frac{115}{100}\)
\(=Rs. 6440\)
C.P of second painting = Rs.2400
Loss % = 5%
∴ S.P. = \(\frac{C.P.(100 + loss\%)}{100}\)
\(=Rs. \frac{2400(100 - 5)}{100}\)
\(=Rs. \frac{2400\times 95}{100}\)
\(=Rs. 2280\)
Total S.P. of two paintings = Rs. 6440 + Rs. 2280 = Rs. 8720
Total C.P. = Rs. 5600 + Rs. 2400 = Rs. 8000
∴ Total Gain = S.P. - C.P. = Rs.8720 − Rs.8000 = Rs.720
∴ Percentage of Gain = \(\frac{720}{8000} \times 100\% = 9\%\)
