In the given question, there are several information's of immense importance. using these given information's the required answer can be easily deduced. It has already been given that Tom has a total amount of $240. He bought 22 boxes of drinks at $4 per box. rest he spent on buying the 8 boxes of sandwiches. A. The amount of money the drinks cost in total = (22 * 4) dollars = 88 dollars So Tom spent $88 on the drinks B. Now we have to first find the amount spent by Tom on the box of sandwiches. Total amount spent by Tom on sandwiches = (240 - 88) dollars = 152 dollars Then the amount of money spent by Tom for buying 1 box of sandwich = (152/8) dollars = 19 dollars So Tom had to pay $19 for buying a single box of sandwich.