7/9 in 20 minutes what is constant rate how much can she collect in 60 minutes
$${\mathtt{60}}{\mathtt{\,\times\,}}\left({\frac{\left({\frac{{\mathtt{7}}}{{\mathtt{9}}}}\right)}{{\mathtt{20}}}}\right) = {\frac{{\mathtt{7}}}{{\mathtt{3}}}} = {\mathtt{2.333\: \!333\: \!333\: \!333\: \!333\: \!3}}$$
