The simple answer is approximately 13.7 years using the rule of 72. Interest paid quarterly will affect the answer a little, but not enough to matter.
I haven't gotten the answer to that test question either....the choices seem wrong
No.
8.0432 years (rounded) if compounded annually.
the equation for compound interest is Pe^(rt) the principal you want in the end is twice that of the original 12,000 plugging in and solving you get 12,000=6000e^(.13t) t = 5.33 years
The basic equation for compounded interest is: FV=PV(1+i)^nt FV=future value PV=present value i=interest compounded per term n=number of times compounded per year t=number of years For this situation: FV=? PV=8000 i=.08 n=1 t=7 Plugging the numbers into the equations gives you FV=8000(1+.08)^7 Solving gives you the amount of 13710.59 A way to roughly check your answer is to use the rule of 72. The rule of 72 is a method of seeing how long it would take to double ones money at a certain interest percent. The interest is 8% so divide 72 by 8 and you get 9. So at 8 percent it would take about 9 years to double your money. Since we only had 7 years, it makes sense that we did not double our money, but we fairly close to doing so, meaning that our answer is viable. This is only a way to roughly check the answer.
I haven't gotten the answer to that test question either....the choices seem wrong
No.
Five years
It is approx 8.66%
8.0432 years (rounded) if compounded annually.
It will take 11.9 (or 12) years.
the equation for compound interest is Pe^(rt) the principal you want in the end is twice that of the original 12,000 plugging in and solving you get 12,000=6000e^(.13t) t = 5.33 years
There are many ways to use the word principal in a sentence: 1. Who is the principal of Howard College? 2. The sum of interest he paid on that loan is double the principal 3. Aderogba will play the principal role in the next movie.
11 years
As a rough guide to double any amount compounded annually, divide 70 by the interest rate. In this case that is 14 years.
Scale is $592.20, so double scale is $1184.40.
The basic equation for compounded interest is: FV=PV(1+i)^nt FV=future value PV=present value i=interest compounded per term n=number of times compounded per year t=number of years For this situation: FV=? PV=8000 i=.08 n=1 t=7 Plugging the numbers into the equations gives you FV=8000(1+.08)^7 Solving gives you the amount of 13710.59 A way to roughly check your answer is to use the rule of 72. The rule of 72 is a method of seeing how long it would take to double ones money at a certain interest percent. The interest is 8% so divide 72 by 8 and you get 9. So at 8 percent it would take about 9 years to double your money. Since we only had 7 years, it makes sense that we did not double our money, but we fairly close to doing so, meaning that our answer is viable. This is only a way to roughly check the answer.