Answer:
Ending cash balance $67,900
Step-by-step explanation:
The computation of the ending cash balance is given below:
Schedule of expected cash collection for September 
 From august sales (70% of 225,000) 157,500 
From sept. sales (30% of 270,000) 81,000 
Total cash collection$238,500
Now 
Schedule of expected cash payment 
 For august purchase (80% of 175,000) 140,000 
Foor september purchase (20% of 195,000) 39,000 
Total cash payment $179,000 
Now 
 
Beginning cash balance 8,400 
Budgeted cash collection 238,500 
Total available cash 246,900 
Budgeted cash payment -179,000 
Ending cash balance $67,900