Question

Mr joshi bequeathed 1/3 of his money to his son , 1/5 to his daughter and the remaining to his wife who got $42000. what is the total amount

Answer 1

let the total amount be X
x-1/3x+1/5x=42000 solve this equation you will get the answer

Answer 2

Suppose Mr. Joshi have $ X;
x/3+x/5 amount given the son and daughter; 
Total amount
x=x/3+x/5+42000;
x-x/3-x5=42000;
7x/15=42000; find x
x=$90000