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Each piece of candy in a store costs a whole number of cents. Casper h

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Each piece of candy in a store costs a whole number of cents. Casper h  [#permalink]

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New post 19 Mar 2019, 09:41
2
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

57% (02:16) correct 43% (02:37) wrong based on 23 sessions

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Each piece of candy in a store costs a whole number of cents. Casper has exactly enough money to buy either 12 pieces of red candy, 14 pieces of green candy, 15 pieces of blue candy, or n pieces of purple candy. A piece of purple candy costs 20 cents. What is the smallest possible value of n?

(A) 18

(B) 21

(C) 24

(D) 25

(E) 28
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Re: Each piece of candy in a store costs a whole number of cents. Casper h  [#permalink]

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New post 19 Mar 2019, 10:04
(N*20)/12, (N*20)/14 and (N*20)/15 must be be integers.. plug in the answer options... Only N=21 will give integral values.... Option B

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Re: Each piece of candy in a store costs a whole number of cents. Casper h   [#permalink] 19 Mar 2019, 10:04
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Each piece of candy in a store costs a whole number of cents. Casper h

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