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08 Jul 2010, 04:04
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
75% (00:59) correct
25%
(01:11)
wrong
based on 801
sessions
History
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If the price of a magazine is to be doubled, by what percent will the number of magazines sold decrease?
(1) The current price of the magazine is $1.00.
(2) For every $0.25 of increase in price, the number of magazines sold will decrease by 10 percent of the number sold at the current price.
(1) The current price of the magazine is $1.00.
(2) For every $0.25 of increase in price, the number of magazines sold will decrease by 10 percent of the number sold at the current price.
08 Jul 2010, 07:20
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sky
If the price of a magazine is to be doubled, by what percent will the number of magazines sold decrease?
(1) The current price of the magazine is $1.00.
(2) For every $0.25 of increase in price, the number of magazines sold will decrease by 10 percent of the number sold at the current price.
Can someone please explain the answer?
(1) The current price of the magazine is $1.00.
(2) For every $0.25 of increase in price, the number of magazines sold will decrease by 10 percent of the number sold at the current price.
Can someone please explain the answer?
(1) Clearly insufficient.
(2) Also insufficient without knowing the current price of the magazine. Because if the current price of the magazine is 1$, when doubled it'll become 2$, so increase is 4 times 0.25$ and decrease in the # of magazines sold will be 4*10=40% BUT if the current price of the magazine is 2$, when doubled it'll become 4$, so increase is 8 times 0.25$ and decrease in the # of magazines sold will be 8*10=80%.
(1)+(2) We know the current price and the relationship between the increase in price and decrease in the # of the magazines sold. Sufficient.
Answer: C.
Hope it's clear.
General Discussion
08 Jul 2010, 10:55
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C
1) price of mgz=$1
new price will be =$2
we do not know how much percent decrease will happen
insuff
2) we do not know the price of magazine
but for $0.25 rise 10% subscription reduces
insuff
1 and 2
u
suff
1) price of mgz=$1
new price will be =$2
we do not know how much percent decrease will happen
insuff
2) we do not know the price of magazine
but for $0.25 rise 10% subscription reduces
insuff
1 and 2
u
suff
