question_answer 11)

                A VCR and TV were bought for Rs 8,000 each. The shopkeeper made a loss of 4% on the VCR and a profit of 8% on the TV. Find the gain or loss per cent on the whole transaction.

Answer:

                Combined CP = Rs 8,000 + Rs 8,000 = Rs 16,000 Loss of 4% on the VCR = 4% of Rs 8,000 = Rs \[\frac{4}{100}\times 8,000\] = Rs 320 SP of VCR = CP ? Loss = Rs 8000- Rs 320 = Rs 7,680 Profit of 8% on the TV = 8% of Rs 8,000 = Rs \[\frac{8}{100}\times 8000\] = Rs 640 \[\therefore \]  SP of TV =CP + Profit = Rs 8,000 + Rs 640 = Rs 8,640 Combined SP = Rs 7,680 + Rs 8,640 = Rs 16,320 \[\therefore \] Gain on the whole transaction = Combined SP ? Combined CP = Rs 16320 ? Rs 16000 = Rs 320 Gain per cent on the whole transaction \[=\frac{320}{16000}\times 100=2%\] Hence, the gain per cent on the whole transaction is 2%.