Final answer:
The net profit for T.N.T Corporation over the specified four-month period is $73,200, derived by summing the monthly profits.
Step-by-step explanation:
The question requires calculation of the net profit for T.N.T Corporation over a four-month period. To find the net profit, we need to sum up each month's profit. The profits for the months are as follows: January: $16,800, February: $4,500, March: $39,900, and April: $12,000.
By adding these amounts together, we get the total net profit for the four months:
$16,800 (January) + $4,500 (February) + $39,900 (March) + $12,000 (April) = $73,200
Therefore, the net profit for T.N.T Corporation over this period is $73,200.