Taser Company owns the following assets acquired on January 1, 2020.

Asset	Cost	Residual Value	Estimated Useful Life
A	$48,000	$800	10 years
B	12,000	-	5 years
C	70,000	1,600	8 years

a. Compute the composite annual depreciation rate. Enter the answer rounded to two digits after the decimal; for example, enter 1.42 for 1.424, or 1.43 for 1.425.
b. Compute the composite group useful life. Enter the answer rounded to two digits after the decimal; for example, enter 1.42 for 1.424, or 1.43 for 1.425.
c. Compute composite depreciation expense for 2020.