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There are 20 colored pencils in a pencil stand. The probability of c
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05 Nov 2024, 01:55
05 Nov 2024, 01:55
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There are 20 colored pencils in a pencil stand. The probability of choosing a yellow colored pencil is 0.8. There are 6 yellow colored pencils without an eraser. If the selected pencil is of yellow colour, what is the probability it is the one that has an eraser?
A. 1/4
B. 3/8
C. 1/2
D. 5/8
E. 3/4
A. 1/4
B. 3/8
C. 1/2
D. 5/8
E. 3/4
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Re: There are 20 colored pencils in a pencil stand. The probability of c
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05 Nov 2024, 20:09
05 Nov 2024, 20:09
1
Number of yellow colored pencils = 20 * 0.8 = 16
--> Yellow colored pencils with an eraser = 16 - 6 = 10
Therefore, the probability of a pencil having an eraser GIVEN that it is yellow = 10/16 = 5/8
The answer is D.
--> Yellow colored pencils with an eraser = 16 - 6 = 10
Therefore, the probability of a pencil having an eraser GIVEN that it is yellow = 10/16 = 5/8
The answer is D.
gmatclubot
Re: There are 20 colored pencils in a pencil stand. The probability of c [#permalink]
05 Nov 2024, 20:09
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