Both Writewell and Express provide round-the-clock telephone assistance to any customer who uses their word-processing software. Since customers only call the hot lines when they find the software difficult to use, and the Writewell hot line receives four times as many calls as the Express hot line, Writewell’s word-processing software must be more difficult to use than Express’s.
Which of the following, if true, most strengthens the argument above?

Question

Examsnet · Accepted Answer

Correct Answer is :  Express has three times the number of word-processing software customers that Writewell has.

GMAT Verbal Reasoning Practice Test 7