Please answer the wuestions thoroughly, for example, help solve for the rention ratio instead if a defintion and for the second, help sold the actual total equity needed if I wanted to keep a debt ratio of 40% ans 80%

A.If Hawkins grows at less than its internal growth rate, what would its retention ratio have to be to avoid either having to buy back some of its stock or debt? b. How much would a $10 million asset company have to have in total equity if it grew by 20% and wanted to keep a debt to ratio of: a. 40% b. 80%