If C.P of an article is 80% of its SP then find the profit

If S.P. of an article is thrice its C.P. then profit percent is

The CP of an article is 5//6 th of the SP. What is the percentage profit or loss?

The percentage of profit made on selling an article is 12% . If the cost price of the article is Rs. 1200, then find the profit.

The marked price of an article is 80% more than its cost price. What should be the discount (in %) offered by the shopkeeper so that he earns a profit of 44%?

7% of S.P. of an article is equal to 8% of C.P. and 9% of S.P. is Rs 1 more than 10% of C.P. Find C.P. of article?

If S.P. of an article is doubled then value of its loss % will convert to profit% . Find loss% of article.