The total commission earned by Clarence Louis is $8940
Solution:
Given that
Clarence Louis sells commercial real state
He earns 2% commission on first $25000
4% commission on second $25000
And 8% commission on sales over $50000
His sell for last month in commercial real state is $118000.
Need to calculate commission on sale of $ 118000.
$118000 = 25000 + 25000 + 93000
Commission on first 25000 is given as:

Commission on second 25000 is given as:

Commission on remaining amount 93000 is given as:

Total commission = 500 + 1000 + 7440 = $8940
Hence last month commission earned by Clarence Louis on sell of $118000 is $8940