Answer:
(a) 2018:
Net income:
= Cash revenue - Cash expenses
= $19,000 - $10,500
= $8,500
Retained earnings = $8,500
2019:
Net income:
= Cash revenue - Cash expenses
= $29,000 - $13,500
= $15,500
Retained earnings = $8,500 + $15,500
= $24,000
2020:
Net income:
= Cash revenue - Cash expenses
= $39,000 - $21,500
= $17,500
Retained earnings = $24,000 + $17,500
= $41,500
(b) 2019:
Net income:
= Cash revenue - Cash expenses
= $29,000 - $13,500
= $15,500
Retained earnings = $8,500 + $15,500 - $4,750
= $19,250
2020:
Net income:
= Cash revenue - Cash expenses
= $39,000 - $21,500
= $17,500
Retained earnings = $19,250 + $17,500
= $36,750