three children put their money together to buy their parents a gift. together they have $91. if the state sales tax is 5%, what is the maximum amount of money they can spend on the present?

To figure this out, you must determine what 5% of $91 is, and then subtract that amount from the $91 to determine how much the item can cost before sales tax. 5% is the same as .05, so 5% of 91 is .05*91=4.55, so they can buy an item that costs as much as 91-4.55=$86.45