clarifications on Questions in practice test 2

[sreekanth.ramayanam]

hi,

I got doubts about following questions from GMAT practice tests. i am not convinced with answers given while reviewing practice tests. please explain them in details

1. R bought two kinds of candy bars , c & t that came in packages of two bars each he handed out 2/3 of chocolate bars and 3/5 of tofee bars how many packages of c bars R bought?

I tought D is correct, but they are saying c. How is that?

2. A major impedidment to wide acceptance of electric vehicles even on part of people who use thier cars almost exclusively for commuting is the inability to use electric vehicles for occasional extended trips. In an attempt to make purchasing electric vehicles more attractive to commuters , one electric producer is planning to offer customers three days free rental of a conventional car for every 1000 miles that they drive the vehicle.

which of following if true most threatens plan's prospects for success?

I think C is correct--> Relatively long time it takes to recharge the battery of an electric vehicle can easily be fitted into regular patterns of car use charecteristic of commuters.

GMAT says B ---> Because majority of commuters drive atleast 100 miles a week, the cost of producer of making good the offer would add considerably to the already high price of electric vehicles.

I appreciate if any one gives a reply for this

[StaceyKoprince]

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