Define the following: S = Previous years sales A = Total assets D = Total debt E

Question:

Define the following:
S = Previous year’s sales
A = Total assets
D = Total debt
E = Total equity
g = Projected growth in sales
PM = Profit margin
b = Retention (plowback) ratio
Show that EFN can be written as:
EFN = –PM(S)b + [A – PM(S)b] × g
Asset needs will equal A × g . The addition to retained earnings will equal PM(S) b × (1 + g ).