A Ltd sales for year $150,000$ of these sales $20,000$ were on credit and $130,000$ in cash

Purchases for the year were $80,000$ of this $75,000$ were in cash and $5000$ on credit.

Cash expenses were $6000$ in the year. A Ltd bought a machine for $10,000$ and depreciated it over $5$ years. It also issued shares raising $90,000$ in the year. There were no opening or closing stocks. It had a zero cash balance at the start of the year

Calculate

a$)$ Its profit for the year

b$)$ Its cash balance at the end of the year

c$)$ Do a statement that explains why the profit