Figure this out.
You saw a shirt for $97
You didn't have cash so you borrowed $50 from your mom and $50 from your dad
$50 + $50 = $100
You buy the shirt and have $3 left over.
You give your parents each $1 and you kept the other $1 for yourself
Now, you owe your parents each $49
$49 + $49 = 98 + $1 you kept = $99
Where's the missing $1??