They use 20,000 for BWIP. I'm so confused.
This answer is correct because first, the number of units in ending work in process must be computed:
Work in process
BWIP 25,000 100,000 Units completed
Units started 135,000 ? EWIP
Units to account for 160,000 160,000 Units accounted for
EWIP = 160,000 units to account for – 100,000 units completed = 60,000 units.
The next step is to compute equivalent units of production (EU) under the FIFO method:
Units completed
100,000
EU in ending WIP (60,000) (50%)
30,000
130,000
EU in beginning WIP (25,000)
(20,000)
(80%)
EU of production
110,000
Conversion cost per unit for the current period is $143,000/110,000 or $1.30 per equivalent unit. The cost of the ending WIP equals the equivalent units in ending WIP times the conversion cost per unit of $1.30:
(30,000) ($1.30) = $39,000
FAR- 84
AUD- 97
REG- 90
BEC- 85