A trader purchase

Price of 1^st type tea = 200/kg

Quantity = 70 kg

Amount = 200 x 70

= 14000

Price of 2^nd type tea = 250/kg

Quantity = 30 kg

Amount = 250 x 30

= 7500

Total amount = 7500+14000

= 21500

Tax = 4%

Tax amount =

= 860

Net amount for tea = total amount + tax

purchase (CP)

= 21500+860

= 22360

Total quantity for sale = 100 kg

Rate of selling = 240/kg

Total amount of sale (SP) = 240 x 100

= 24000

Overall Profit/Loss = SP– CP

= 24000-22360

Profit = 1640

Profit %

= 7.33%

∴ Profit % is 7.33 %