From the following, prepare depreciation schedules for the first two years for

(a) Straight-line,

(b) Units-of-production,

(c) Double declining-balance at twice the straight-line rate methods.

Machine purchased on January 1 ......$1,900

Residual value .............. $300

Estimated useful life ........... four years

Total estimated output ........... 800 units

Output year 1 ................ 100 units

Output year 2 ................ 150 units