If the ratio f cost price and selling price of an article be 10:11 the percentage f profit is `8` b. `\ 10` c. `11` d. `15`

If the ratio f cost price and selling price of an article be 10:11 the percentage f profit is 8 b.110 c.11 d.15

If the ratio of the cost price and selling price of an article is 20 : 21, then what will be the profit percentage?

Anu purchased car and then sold it. If the ratio of the cost price and selling price is 10:11 , then the profit percentage is: