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word probs help plz

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word probs help plz

by quantskillsgmat » Fri Mar 09, 2012 10:05 pm
Q billy has unlimited supply of following coins: penny,nickels,dimes quarters and half dollar (50cents).On monday he bought one candy for less than a dollar and paid exactly with four coins.on tuesday,he bought two of the same candy and again paid with exactly four coins.on wdnesday, he bought three of the candies,on thursday four of the candies and on friday five of the candies.each day he was able to pay with exactly four coins.which of the following could be price of on candy in cents.
a)8 b)13 c)40 d)53 e)66
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by killer1387 » Fri Mar 09, 2012 10:47 pm
quantskillsgmat wrote:Q billy has unlimited supply of following coins: penny,nickels,dimes quarters and half dollar (50cents).On monday he bought one candy for less than a dollar and paid exactly with four coins.on tuesday,he bought two of the same candy and again paid with exactly four coins.on wdnesday, he bought three of the candies,on thursday four of the candies and on friday five of the candies.each day he was able to pay with exactly four coins.which of the following could be price of on candy in cents.
a)8 b)13 c)40 d)53 e)66
By using 4 coins the maximum one can get is 50 *4=200
now 53 and 66 are out that is not possible with these coins as 53*5 and 66*5 are both >200
out of a,b &c
only 40 satisfies

hence C.
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by quantskillsgmat » Sat Mar 10, 2012 9:56 pm
Q billy has unlimited supply of following coins: penny,nickels,dimes quarters and half dollar (50cents).On monday he bought one candy for less than a dollar and paid exactly with four coins.on tuesday,he bought two of the same candy and again paid with exactly four coins.on wdnesday, he bought three of the candies,on thursday four of the candies and on friday five of the candies.each day he was able to pay with exactly four coins.which of the following could be price of on candy in cents.
a)8 b)13 c)40 d)53 e)66
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