Ayayai Corp. uses a periodic inventory system. Details for the inventory account for the month of January 2022 are as follows: Units Per unit price Total Balance, 1/1/2022 280 $5 $1400 Purchase, 1/15/2022 140 ..5 700 Purchase, 1/28/2022 140 ..5 700 An end of the month (1/31/2022) inventory showed that 230 units were on hand. How many units did the company sell in January 2022