An estate was divided among three heirs. After Andrea received 50% of the estate, her mother received 50% of what remained, leaving $20,000 for Andreas uncle. What was the total value of the estate?

a=.50e m=.50(.50e)=.25e u=20,000

e=20,000+.25e+.50e
e-.25e-.5e=20000
.25e=20000
e=80000

Total estate was 80,000