Below are items from recent financial statements from Moss and Mole Manufacturing:

Current Balance Sheet (all numbers are in thousands)
Total assets.........................................................$192,000
Stockholder’s equity.............................................$44,000
Total liabilities.....................................................$148,000
Current Income Statement
Sales....................................................................$260,000
Net income...........................................................$37,500
Dividends paid.....................................................$18,750

a. Find M&MM’s internal growth rate.

b. Find their sustainable growth rate.