Where's The Missing $1? You saw a shirt in a shop for $97. You didn't have the cash so you borrowed $50 from your mum and $50 from your dad. $50 + $50 = $100 You got $3 change, and gave one to your mum and one to your dad and kept the other one for yourself. Now you owe your mum $49 and your dad $49. $49 + $49 + Your $1 = $98. Where's the missing $1?