EMPOWERgmatVerbal wrote:
CR INFERENCE SERIES: Question 2) Per Unit, Compact Fluorescent Light Bulbs Per unit, compact fluorescent light bulbs (CFLs) are slightly more expensive to produce than incandescent light bulbs, and CFLs also sell at a noticeable premium over comparable incandescent light bulbs. However, CFLs are less expensive overall than incandescent light bulbs because CFLs typically use 75% less electricity to operate, and thus provide the ability to save money on energy expenses over the long run.
The above statements, if true, most strongly support which of the following?
Ⓐ The additional energy cost from use of incandescent light bulbs instead of CFLs exceeds the additional manufacturing cost associated with the production of CFLs.
Ⓑ CFLs are now as readily available as incandescent light bulbs at most major retailers, including online vendors.
Ⓒ Incandescent light bulbs are compatible with a greater number of light fixtures than are CFLs.
Ⓓ Households equipped with CFLs use less energy than households equipped with incandescent light bulbs.
Ⓔ The primary material from which CFLs are manufactured is slightly more expensive than the primary material used to manufacture incandescent light bulbs.
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Scroll Down For Official Explanation ◀ CR INFERENCE SERIES: Question 1) Securities Industry Regulator ▶ CR INFERENCE SERIES: Question 3) Restless Leg Syndrome A.Now since from the stimuli,the overall cost of getting and using a CFL bulb is lesser than getting a comparable incandescent bulb,it means that the cost of energy for CFL+ price of CFL <cost of incandescent + cost of energy for incandescent. We know that the incandescent has a cheaper price so for the overall cost of the incandescent to exceed the overall cost of the CFL,its energy cost should be bigger than CFL's energy cost as well as CFL's additional manufacturing cost.
B.The stimuli does not support this.Remember,you can not introduce additional information into the answer choices rather than what is explicitly written in the stimulus or what can be inferred from the stimulus
C.Again the stimuli does not even touch this and it is out or scope for the same reason as B
D.Now this is the pitall. Incandescents use more energy,that is true but does it mean households who use incandescents consume more energy.What if households with CFLs run equipment that makes their energy consumption much greater than households with incandescent. So this could be true but its not definitely true
E. Could be true or could not.Maybe what makes CFLs more expensive is comparative labor costs for producing a unit of CFL and not the material.