how donyou solve for periodic inventoru ?

Required information [The following information applies to the questions displayed beliow] Frigid Supplles reported beginning inventory of 200 units, for a total cost of $2.000. The compary hod the following transections during the month: January 3 sold 20 units on account at a selling price of 515 per unit. 3anisery 6 govght 30 units on account at a cost of \$10 per unit. lanuary 16 sold 30 runits on account at a selling price of 515 per unit. January 19 sold 20 units on account at a sel1ing price of 520 per unit. January 26 bought 10 units on account at a cost of 510 per un1t. Jamary 31 Cosinted Imventory and deternined that 16e units were on hand. 3-a. What is the dollar amount of shrinkage that you were able to determine in periodic inventory system? 3.b. What is the dollar amount of shrinkage that you were able to determine in perpetuai inventory system