1/4 (2x - 14) = 4
2x - 14 = 16
2x = 30
x = 15
The answer is about 20.15 years ie 20 years 1 month and 24 days.
to solve it first you would have to pick just about any arbitrary salary value eg:lets say $3000.so now you plug the value in this formula:
where p is the principle value or rather the initial value and x is the time during which the money changes.now we have to find x since we the 3000 and 6000 (the double of 3000) and the percentage per year which is 3.5.plugging in the values into the formula we get:
now we solve for x using a scientific calculator and we get 20.14879168
we convert to 2 decimal place and get 20.15 year.
btw once you got the years now u can insert any value of your salary and assuming that the 3.5% remain constant you should be able to obtain just about the double of your salary.
hope that helped :)
5 + x = 5x
Hopefully this is what you meant.
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