Fabio is a video salesman. on each sale, he earns a commission of 12%. one of his customers bought a tv for $550 and a vcr for $400. how much did he earn in commissions?

Given that Fabio earns 12% commission for every sales he makes, the total amount he earned for selling a TV that cost $550 and VCR for $400 will be:
commission=[percentage commission]/100*[total amount sold]
total amount sold=550+400=$950
commission=12/100*950
=$114
therefore he earned $114 as commission

I think the answer is letter B. (6)