SOLUTION: There are currently 50 million cars in a certain country, decreasing by 4.9% annually. How many years will it take for this country to have 27 million cars? Round to the nearest ye

Question 144261: There are currently 50 million cars in a certain country, decreasing by 4.9% annually. How many years will it take for this country to have 27 million cars? Round to the nearest year.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
There are currently 50 million cars in a certain country, decreasing by 4.9% annually. How many years will it take for this country to have 27 million cars? Round to the nearest year.
----------------------
A(t) = Ao(1-0.049)^t
27 mil = 50 mil (0.951)^t
0.951^t = (27/50)
t[log0.951] = log[27/50]
t = 12.264 years
=================
Cheers,
Stan H.
RELATED QUESTIONS
there are currently 71 million cars in a certain county, decreasing by 1.5% annually how... (answered by Boreal,amfagge92,MathTherapy)

there are currently 58 million cars in a certain country. decreasing exponentially by... (answered by stanbon)

How would I solve: There are currently 74 million cars in a certain country decreasing (answered by navywife617)

There are currently 68 million cars in a certain country, increasingly by 1.8% annually.... (answered by jsmallt9)

There are currently 80 million cars in a country, decreasing 3.4% annually. How many... (answered by greenestamps)

There are currently 60 million cars in a certain country, decreasing by 5% annually. How... (answered by rwm)

there are currently 53 million cars in a certain country increasing exponentially by 6.6% (answered by josgarithmetic)

There are currently 74 million cars in a certain country, decreasing by 4.3% annually.... (answered by stanbon)

There are currently 73 million cars in a certaint country increasing by 1.7% annually how (answered by FrankM)