A dealer sold three-fifth of his goods at a gain of 25% and the remaining at cost price. What is his loss or gain percent in the whole transaction?A15% gainB15% lossC18% gainD18% lossAnswer: A. 15% gain Read Explanation: total cost price =100= 100=1003/5 th of cost price =100×35=60=100\times \frac35=60=100×53=60gain of 252525 %so the cost will be =60×125100=75=60\times \frac{125}{100}=75=60×100125=753/5th is sold rupees =75=75=75rest of them are sold with =100−60=40=100-60=40=100−60=40so the total amount will be =75+40=115=75+40=115=75+40=115percentage of gain is =115−100=15=115-100=15=115−100=15% Read more in App