Summing up all the amount in commission made from the three sales we have
= 5500+3250+3900
=$12,650
Given Data
= 5/100*$110,000
= 0.05*$110,000
= $5500
= 5/100*$65,000
= 0.05*$65,000
= $3250
= 5/100*$78,000
= 0.05*$78,000
= $3900
Learn more about percentages here:
https://brainly.com/question/19247356