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Each candle in a particular box is either round or square

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by BTGmoderatorDC » Sun Jul 28, 2019 8:38 pm

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A

B

C

D

E

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Each candle in a particular box is either round or square and either scented or unscented. If 60% of the candles are round, what is the probability that a candle selected randomly from the box will be unscented?

(1) If a candle is scented, it has an 80% chance of being round.
(2) If a candle is square, it has a 25% chance of being scented.

OA C

Source: Princeton Review
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Source: — Data Sufficiency |

by Jay@ManhattanReview » Mon Jul 29, 2019 10:29 pm
BTGmoderatorDC wrote:Each candle in a particular box is either round or square and either scented or unscented. If 60% of the candles are round, what is the probability that a candle selected randomly from the box will be unscented?

(1) If a candle is scented, it has an 80% chance of being round.
(2) If a candle is square, it has a 25% chance of being scented.

OA C

Source: Princeton Review
See the self-explanatory images, given below.

Image
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The correct answer: C

Hope this helps!

-Jay
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