Critical Reasoning

In comparison to the standard typewriter keyboard, the EFCO keyboard, which places the most-used keys nearest the typist’s strongest fingers, allows faster typing and results in less fatigue, Therefore, replacement of standard keyboards with the EFCO keyboard will result in an immediate reduction of typing costs.

Which of the following, if true, would most weaken the conclusion drawn above?

(A) People who use both standard and EFCO keyboards report greater difficulty in the transition from the EFCO keyboard to the standard keyboard than in the transition from the standard keyboard to the EFCO keyboard.

(B) EFCO keyboards are no more expensive to manufacture than are standard keyboards and require less frequent repair than do standard keyboards.

(C) The number of businesses and government agencies that use EFCO keyboards is increasing each year.

(D) The more training and experience an employee has had with the standard keyboard, the more costly it is to train that employee to use the EFCO keyboard.

(E) Novice typists can learn to use the EFCO keyboard in about the same amount of time it takes them to learn to use the standard keyboard.

D It is

Yups D...

replacement of standard keyboards with the EFCO keyboard will result in an immediate reduction of typing costs

D says The more training and experience an employee has had with the standard keyboard, the more costly it is to train that employee to use the EFCO keyboard

Yep yep. It's D. Choices A, B, C, and E either more or less support the passage or are out of scope.

rahulg83 wrote:Yups D...

replacement of standard keyboards with the EFCO keyboard will result in an immediate reduction of typing costs

D says The more training and experience an employee has had with the standard keyboard, the more costly it is to train that employee to use the EFCO keyboard

good job.

OA (D)

Can someone throw more light on why not (E)?

(E) Novice typists can learn to use the EFCO keyboard in about the same amount of time it takes them to learn to use the standard keyboard.

The conclusion says that EFCO keyboard will result in an immediate reduction of typing costs.
But the answer choice E neither supports nor refutes the conclusion, since cost of learning typing on both kinds of keyboards will approximately be same.

aspirant_gmat wrote:(E) Novice typists can learn to use the EFCO keyboard in about the same amount of time it takes them to learn to use the standard keyboard.

The conclusion says that EFCO keyboard will result in an immediate reduction of typing costs.
But the answer choice E neither support nor refute the conclusion, since cost of learning typing on both kind of keyboards will approximately be same.

Thanks and good job again. The average 'GMAT intelligence' of this forum is very high

IMO: D

E gets eliminated bec it talks about use whereas our focus is on efficiency and fatigue level and cost. USE is OUT OF SCOPE

I had chosen B. After reading through the explanations by others it seems that D is the right answer. But do you agree that B is a close candidate or am I flat out wrong?

IMO: D

E, strengthens the argument!!