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Mrrafil [7]
3 years ago
8

In the year 1985, a house was valued at $110,000. By the year 2005, the value had appreciated to $145,000. What was the annual g

rowth rate between 1985 and 2005? Assume that the value continued to grow by the same percentage. What was the value of the house in the year 2010?
Mathematics
1 answer:
Elenna [48]3 years ago
4 0

Answer:

The annual growth rate is of 1.39%.

The value of the house in 2010 was $155,355.5

Step-by-step explanation:

The value of a house after t years is given by the following equation:

V(t) = V_{0}(1 + r)^{t}

In which V_{0} is the initial value and r is the annual growth rate.

In the year 1985, a house was valued at $110,000. By the year 2005, the value had appreciated to $145,000. What was the annual growth rate between 1985 and 2005?

We want to find r, when V_{0} = 110 and V(20) = 145.

I use V(20) since 2005 is 20 years after 1985.

So

V(t) = V_{0}(1 + r)^{t}

145 = 110(1 + r)^{20}

(1 + r)^{20} = 1.3182

Applying the 20th root to both sides.

1 + r = 1.0139

r = 0.0139

So the annual growth rate is of 1.39%.

What was the value of the house in the year 2010?

2010 is 25 years after 1985. So

V(t) = 110(1.0139)^{t}

V(25) = 110(1.0139)^{25} = 155.3355

The value of the house in 2010 was $155,355.5

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