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A deck of cards is 1.5 centimeters thick. If each of the cards is 0.0

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A deck of cards is 1.5 centimeters thick. If each of the cards is 0.0  [#permalink]

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New post 19 Feb 2018, 22:47
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

89% (00:36) correct 11% (00:42) wrong based on 87 sessions

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Re: A deck of cards is 1.5 centimeters thick. If each of the cards is 0.0  [#permalink]

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New post 19 Feb 2018, 22:59
1
No of cards= \(\frac{1.5}{0.03}\)= \(\frac{15}{10}\)*\(\frac{100}{3}\) =50

Answer: B.
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Re: A deck of cards is 1.5 centimeters thick. If each of the cards is 0.0  [#permalink]

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New post 23 Feb 2018, 06:21
A deck of cards is 1.5 centimeters thick. If each of the cards is 0.03 centimeters thick, how many cards are in the deck?

(A) 45

(B) 50

(C) 450

(D) 500

(E) 1500

Multiply numerator and denominator by 100:
150/3 = 50

Answer is B

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Re: A deck of cards is 1.5 centimeters thick. If each of the cards is 0.0  [#permalink]

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New post 23 Feb 2018, 10:03
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Top Contributor
Bunuel wrote:
A deck of cards is 1.5 centimeters thick. If each of the cards is 0.03 centimeters thick, how many cards are in the deck?

(A) 45

(B) 50

(C) 450

(D) 500

(E) 1500


We need to determine the number of times 0.03 cm (the thickness of ONE card) divides into 1.5 cm (the thickness of the entire deck)
In other words, we must evaluate 1.5/0.03

IMPORTANT: Rather than perform long division with decimals (yuck!!), we can take 1.5/0.03 and create an equivalent fraction

Take 1.5/0.03 and multiply numerator and denominator by 100 to get: 150/3
At this point, it's easy to see that 150/3 evaluates to 500

So, 1.5/0.03 = 150/3 = 50

Answer: B

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Re: A deck of cards is 1.5 centimeters thick. If each of the cards is 0.0  [#permalink]

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New post 20 Mar 2019, 08:46
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Re: A deck of cards is 1.5 centimeters thick. If each of the cards is 0.0   [#permalink] 20 Mar 2019, 08:46
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