FIFO and LIFO Costs Under Perpetual Inventory System

The following units of an item were available for sale during the year:

Beginning inventory $,34$ units at $$46$

Sale $,30$ units at $$74$

First purchase $,15$ units at $$48$

Sale $,7$ units at $$76$

Second purchase $,27$ units at $$49$

Sale $,20$ units at $$76$

The firm uses the perpetual inventory system, and there are $19$ units of the item on hand at the end of the year.

a$.$ What is the total cost of the ending inventory according to FIFO?

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b$.$ What is the total cost of the ending inventory according to LIFO?