Question

How do you solve this, (1-(1.087)^-n)/0.087=4.5?

Answer 1

`n=5.9548`

Explanation:

WE have `(1-(1.087)^-n)/0.087=4.5`

or `1-(1.087)^(-n)=4.5xx0.087=0.3915`

or `-(1.087)^(-n)=0.3915-1=-0.6085`

i.e. `(1.087)^(-n)=0.6085`

or `-nlog1.087=log0.6085`

or `n=-log0.6085/log1.087`

= `5.9548`