Question

a fruit vendor buys orange at 6 for ₹10 and an equal number at 10 for ₹ 20.He mixes them and sell at 21.60 per dozen find his gain or loss per cent

Answer 1

gainpercent=1-losspercent 
given 6 for 10rupees,10 for 20rupees
answer=forgain i/100.4