
Andrew M. answered 04/19/18
Tutor
New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors
If the value depreciates at R% per hear then each year
the value is (1-R) times the previous years value:
vt = v0(1-R)t
Vt = value after t years = 13,005
t = time in years = 2
v0 = initial value = 18,000
13005 = 18000(1-R)2
13005/18000 = (1-R)2
Take square root of both sides
1-R = √(13005/18000)
R = 1 - √(13005/18000)
R = 1 - 0.85
R = 0.15
The depreciation rate is 15% per year
Check: 13005 = 18000(1-0.15)2
13005 = 13005
Answer is verified