1. Lisa Inc. adopted the dollar-value LIFO inventory method as of January 1, 2015. A single inventory pool and an internally computed price index are used to compute Lisas LIFO inventory layers. Information about Lisas dollar value inventory follows:

Inventory Date At base cost Year cost At current Year cost At dollar Value LIFO

1/1/2015 $60,000 $ 60,000 $60,000

2015 layer 7,500 21,000 9,000

12/31/2015 67,500 81,000 69,000

2016 layer 22,500 39,000 ?

12/31/2016 $90,000 $120,000 ?

What is Lisas dollar value LIFO inventory at December 31, 2016? Please provide calculations.