during the months of january and february, solitare corporation sold goods to two customers. the sequence of events was as follows: january 6 sold goods for $100 to wizard incorporated with terms 2/30, n/60. the goods cost solitare $70. january 6 sold goods to spyder corporation for $80 with terms 5/10, n/60. the goods cost solitare $60. january 14 collected cash for the amount due from wizard incorporated. february 28 collected cash for the amount due from spyder corporation.