208. Biscuits. A trader packed his biscuits (all of the same quality) into boxes weighing $16, 17, 23, 39$, and 40 pounds respectively and was unwilling to sell them in any other way than whole boxes. A customer asked him to supply 100 pounds of biscuits.

Could you fulfill this order? If not, how close can you get to the number 100? Of course, the trader has enough boxes of each weight.
208. You need to give the customer four boxes at 17 pounds each and two at 16 pounds, which will make exactly 100 pounds.