tricky1

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tricky1

by geet » Fri Jun 12, 2009 11:50 pm
Each December 31 in Country Q, a tally is made of the country’s total available coal supplies—that is, the total amount of coal that has been mined throughout the country but not consumed. In 1991 that amount was considerably lower than it had been in 1990. Furthermore, Country Q has not imported or exported coal since 1970.
If the statements above are true, which one of the following must also be true on the basis of them?
(A) In Country Q, more coal was mined in 1990 than was mined in 1991.
(B) In Country Q, the amount of coal consumed in 1991 was greater than the amount of coal mined in 1991.
(C) In Country Q, the amount of coal consumed in 1990 was greater than the amount of coal consumed in 1991.
(D) In Country Q, the amount of coal consumed in 1991 was greater than the amount of coal consumed in 1990
(E) In Country Q, more coal was consumed during the first half of 1991 than was consumed during the first half of 1990.
Source: — Critical Reasoning |

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by joymukhi » Sat Jun 13, 2009 1:22 am
Please post OA & explanation for this.

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Re: tricky1

by Minheequang » Sat Jun 13, 2009 2:12 am
Clearly B
1990 tally = 1990 total mined coal - 1990 total consumed coal = (1)
1991 tally = 1991 total mined coal - 1991 total consumed coal + (1) = (2)

So, (2) < (1) --> (1991 total mined coal - 1991 total consumed coal) < 0


All other choices lack sufficient clues to reach to such conclusion

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by hetavdave » Sun Jun 14, 2009 12:05 am
IMO - B

Choice D and E are out of scope. Between A,B and C, B offers the most relevant explanation.

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by geet » Sun Jun 14, 2009 12:16 am
OA is B

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by armaan700+ » Sun Jun 14, 2009 3:26 am
IMO B

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by khanshainur » Sun May 15, 2016 10:32 pm
I am leaning more towards B, but I'm not sure about it