Brain Teaser.Pls Read Very Well And Answer The Question.

Test your ability here.Lets say you saw a laptop of 97K. You didn't have the cash, so you borrowed 50K from ur mom and 50K from ur dad = 100K. You bought the laptop which left you with 3K change. You gave ur dad 1K and ur mum 1K and kept the other 1K to yourself. Now you owe your mum 49K and ur dad 49K. Now 49K+49K = 98K + ur 1K kept = 99K. Where is the missing 1K? I know you are intelligent. Pls Solve it and tell me your answers....