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ValentinkaMS [17]
3 years ago
15

If you invest $3,900 at a 7.83% simple annual interest rate, approximately how long will it take for you to have a total of $10,

000?
a.
12 years
b.
15 years
c.
20 years
d.
30 years
Mathematics
2 answers:
Alexus [3.1K]3 years ago
5 0

we know that

The simple interest formula is equal to

A=P(1+rt)

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

t=?\ years\\ P=\$3,900\\ A=\$10,000\\r=0.0783

substitute in the formula above

10,000=3,900(1+0.0783t)

Solve for t

10,000/3,900=(1+0.0783t)

(10,000/3,900)-1=0.0783t

0.0783t=1.5641

t=1.5641/0.0783

t=19.98\ years

therefore

<u>the answer is the option C</u>

20\ years

ludmilkaskok [199]3 years ago
3 0
It's c 20 years hope this helps:)
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