Question

A trader purchases several articles at the rate of 13 for Rs 10 and sells them at the rate of 10 for Rs 13. What is his gain/loss?​

Answer 1

Answer:

Lets assume he/she brought 130 articles

Cost price for 130 articles at the rate of 13 articles for Rs. 10 =(130*10)/13 =Rs 100

Selling price for 130 articles at the rate of 10 articles for Rs 13 =(130*13)/10 =Rs 169

Gain = S.P - C.P = 169–100=Rs 69 for selling 130 articles

Gain in selling 1 article =69/130

Cost price of one article= 100/130 =10/13

Gain percentage= {(69/130)/(10/13)}*100 =69%