You saw a shirt for $97. You didn’t have the cash, so you borrowed $50 from your mum and $50 from your dad = $100. You bought the shirt, and had $3 change. You gave your dad $1 and your mum $1 and kept the other $1 for yourself. Now you owe your mum $49 and your dad $49. 49+49 = 98 + your $1 = 99. Where is the missing $1?

chaystar:

97/2 = borrowed 48.50 from each parent for top / 1.5 change for each parent

3 dollar change - paid back 1 to mum + 1 to dad and kept the 1 (0.5 x 2) to self instead of giving it back, naughty.

97 for top + 1 mum + 1 dad + the cheeky 1 dollar = 100.

Dont be fooled by the cunning math linguists