Money problem

Question

I borrow 100$ from my mom and 100$ from my sister, i bought 170$ jeans i got 30$ change. I give 10$ to my mom and 10$ to my sister. I keep 10 dollars. I owe my sister 90$ and my mom 90$. I give the 10$ back where are the 10$ missing

Answer 1

1.  Don't borrow so much from family members! Bad habit.

2.  No money is missing. The $90 that you owe each is $180 total, and you have jeans worth $170 and $10 cash remaining, which is a total of $180, which is the amount that you still owe.