Gopal has a Provision Store hi bro brought b2st 25 kg Tea Leaf at rupees 80 per kg and 30 kg Tea Leaf at Rs 110 per kg he mixed both the tea leaf and sold it at rupees 105 per kg find his gain or loss percent comparing quantities

Cutting through that terrible typing, (what is "b2st"), I will summarize:

bought 25 kg at Rs 80/kg
bought 30 kg at Rs 110/kg
sold 55 kg at Rs 105/kg

cost to purchase = 25(80) + 30(110) = Rs 5300
income = 55(105) = Rs 5775

So, what do you think?
Profit is clearly Rs 475

find the percent of gain ....

Wrong answer