Narong's family bought 3 shirts, 2 pairs of jeans, and 2 pairs of shoes. each shirt cost $18, and each pair of shoes cost $35. the jeans were marked down from their original price of $40. what other information, if any, is needed to find the total cost of the 7 items before tax?

The total cost that should be paid by the family is comprised of the cost for the shirts, the pairs of jeans, and pairs of shoes. The amount for each classification of items is determined by multiplying the number of items to the price per item. 

The additional information that is needed in order to come-up with a reasonable estimation of the total price to be paid is the discount rate for the jeans. In this manner the buyer will then be able to determine the current price from $40.