A trader buys 200 dozen oranges at 10 per dozen and pays 500 on transport then sells at 1 per orange find profit or loss percent

Cost of fruit equals 200 times 10 which is 2000. Add 500 to get 2500 total. Total oranges equal 2400. Revenue equals 2400 times 1 which is 2400. Loss equals 2500 minus 2400 which is 100. Loss percent equals 100 over 2500 times 100 which gives 4 percent.