In order to make a profit, a retailer will mark up the cost of an item. If the cost of the item is $42 but it is sold for $89, what is the mark up rate for the item?
Round your answer to the whole percent.

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

Will give brainliest what is the value of x? enter your answer in the box.

Astore has apples on sale for three dollars or 2 pounds how many pounds of apples can you buy for nine dollars if an apple is approximately 5 ounces how many apples can you buy for nine dollars