Ans: B GmatDaddy
Argument: (BG info) Both Writewell and Express provide round-the-clock telephone assistance to any customer who uses their word-processing software.
Premise: (1) Since customers only call the hot lines when they find the software difficult to use, and (2) the Writewell hot line receives four times as many calls as the Express hot line, (conclusion) 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?
means what can I add to make the conclusion strong? difficulty in use = W's Soft > E's
(A) Calls to the Express hot line are almost twice as long, on average, as are calls to the Writewell hot line.
(If anything this actually weakens the argument) IF call to E's are twice as long and customer only calls for the issue in using the software, then we can think (a bit) that longer calls means customers are not able to easily understand how to use the software even when they are on the call and someone is explaining them how to use it. So this actually (may) shows that E's > Ws
(B) Express has three times the number word-processing software customers that Writewell has.
(This strengthen the argument) E has 3 times more customer then Ws and still W has higher calls. even with 3:1 ratio of customer W is gettting more calls then there must be something wrong and the only thing, as per the argument, can be wrong for getting the calls is the difficuty in use of the software. so W's > E's
Correct ans(C) Express receives twice as many letters of complaint about its word-processing software as Writewell receives about its word-processing software. (Although the argument doesn't talk about the letter but anything this also weakens the argument by showing that E's > W's)
(D) The number of calls received by each of the two hot lines has been gradually increasing.
(Gradually increasing is not enough to show which one is difficult to use ??)
(E) The Writewell hot-line number is more widely publicized that the Express hot-line number.
(WE are not concerned about all the population or how many people have the number because we can say that if I am the customer of any specific software, the chances are almost 100% that I will have the customer care's number for my use, so not relevent to us)