If 11 oranges were brought for Rs 10 and 10 were sold at Rs 11 then what is the profit percentage

100 oranges are bought for Rs. 350 and sold at the rate of Rs. 48 per dozen. The percentage of profit or loss is :

8 boxes of a fruit were purchased for Rs 9,600.5 boxes were sold at a profit of 10% and 3 boxes were sold at a loss of 10%. What is the net gain in percentage ?

If I would have purchased 11 articles for Rs. 10 and sold all the articles at the rate of 10 for Rs. 11, the profit per cent would have been:

Karim bought 150 dozens pencils at Rs 10 a dozen. His overhead expenses were Rs 100. He sold them at Rs 1.20 each. What was his profit or loss percent?

A scooter was bought for Rs. 30000 and a repair charge of Rs. 3000 was incurred. It was sold for Rs. 39600. What was the profit percentage ?