Question

A will states that 8/9 of an estate is to be divided among relatives. Of the remaining estate, 1/5 goes to the american cancer society. What fraction of the estate goes to the american cancer society?

Answer 1

8/9 - 1/5 
= 5(8/9)-9(1/5)
=(40/45)-(9/45)
=31/45
 

therefore 31/45 of the estate would go to the American cancer society