Let M be Milena’s amount of money, J denotes Jacob’s money and P the price of the MP3 player. We know that : P-37=J, J>0, P-2=M and M+J<P. So 2P-39<P, hence P<39. Since P is a whole number and J>0, then P=38.
Let M be Milena’s amount of money, J denotes Jacob’s money and P the price of the MP3 player. We know that : P-37=J, J>0, P-2=M and M+J<P. So 2P-39<P, hence P<39. Since P is a whole number and J>0, then P=38.