Lynn and Stacy went shopping with a total of $450. Lynn spent 1/4 of her money and Stacy spent $60 . The ratio of stacks money to Lynn's money then became 3:1. How much did Lynn have left????????
$${\frac{{\mathtt{1\,560}}}{{\mathtt{4}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{60}} = {\mathtt{450}}$$