Aisha earned some money doing odd jobs
Let P be the amount earned doing odd jobs
she saved the money for 7 years
The interest is 14%
Using the formula
A = p(1 + r/n)^nt
Let P = principal
t= time
r = rate
n = compounded period
Since, the money is compounded monthly, then n = 12
A = $300.00
r = 14%
r = 14/100 = 0.14
t = 7
n = 12
substituting the above figures in to the formula
$300 = P( 1 + 0.14/12)^12 x 7
300 = P( 1 + 0.0116)^84
300 = P (1.0116)^84
300 = P(2.635)
300 = 2.635P
Divide both sides by 2.635
300/2.635 = 2.635P/2.635
P = $113.85
Approximately $114
The money she earned doing odd jobs is $114