Question 248628
310,000(1/2)^t = 60000
Divide both sides by 310000
{{{(1/2)^t}}} = {{{60000/310000}}}
:
{{{(1/2)^t}}} = {{{6/31}}}
{{{log((1/2)^t) = log(6/31)}}}
{{{t*log(1/2) = log(6/31)}}}
-.301t = -.713
t = {{{(-.713)/(-.301)}}}
t = +2.37 yrs
:
:
Check on a calc: enter: 31000 * .5^2.37 = 59968 ~ 60000
:
jos is right, when you get this contradiction resolved, you can use this method