Xiao Ming borrowed 500 yuan from his father and 500 yuan from his mother. It cost 970 yuan to buy a pair of shoes. He returned 10 yuan to his father and 10 yuan to his mother. That's 490 yuan to his father and 490 yuan to his mother, a total of 980 yuan. In addition, Xiao Ming's 10 yuan is 990 yuan. Where is the other 10 yuan

Xiao Ming borrowed 500 yuan from his father and 500 yuan from his mother. It cost 970 yuan to buy a pair of shoes. He returned 10 yuan to his father and 10 yuan to his mother. That's 490 yuan to his father and 490 yuan to his mother, a total of 980 yuan. In addition, Xiao Ming's 10 yuan is 990 yuan. Where is the other 10 yuan

Borrow 1000 to repay 20 is equivalent to borrow 980. Buy shoes 970 is equivalent to Xiaoming's remaining 10 yuan