Question: John decides to get a loan by mortgaging his home.  His house is worth $250,000.  He gets a loan worth 40% of that.  He uses 60% of that to pay off his debts.  How much money did he have leftover after paying debt?
Find the solution. 
Answer: 
His loan is worth 250,000*.4=$100,000
That means he uses 100,000*.6=$60,000 to pay off debts
So he has 100,000-60,000=$40,000 leftover