Question 1110473
P=Poe^rt for continuous
P=20000*e^(0.052t) ANSWER
it will double in approximately 72/5.2 or about 14 years by rule of 72, which estimates it a little high.
40000=20000e^.052t
2=e^.052t
ln 2=.052t
0.693=0.052t
t=13.33 years
she will be 33