Question

A shopkeeper buys an article for Rs 800 and spends Rs 100 on its transportation, etc. He marks the article at a certain price and then sells it for Rs 1,287 including 10% sales tax. Find his profit as per cent.

Answer 1

C.P. of an article = Rs 800

Expenditure = Rs 100

Total C.P. = Rs 800 + Rs 100 = Rs 900

Let sale price = Rs y

Sale price inclusive of sales tax = Rs 1,287

Rate of sales tax = 10%

Then y + 10% of y = Rs  1,287

`=> y + y/10 = Rs 1287`

`=> (11y)/10 = Rs 1287`

`=> y = Rs (1287 xx 10)/11 = Rs 1170`

His profit = Rs 1170 - Rs 900 = Rs 270

His profit% = `270/900 xx  100% = 30%`