A fruit-seller buys oranges at 4 for Rs.3 and sells them at 3 for Rs.4. Find his profit percent.
Let number of oranges bought = 12
[Note: L.C.M of 4 and 3 = 12]
∴ C.P. of oranges = Rs. 34×12= Rs.9 and S.P. of oranges = Rs. 43×12
= Rs. 16
Profit = 16- 9
= Rs. 7
Profit % = ProfitC.P.×100
= 79×100=7009%