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If a bag contains 18 yellow tiles and 22 black tiles, what i
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16 Sep 2018, 11:34
16 Sep 2018, 11:34
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If a bag contains 18 yellow tiles and 22 black tiles, what is the probability that a tile selected at random from the bag will be yellow?
A. \(\frac{1}{10}\)
B. \(\frac{9}{20}\)
C. \(\frac{11}{20}\)
D. \(\frac{9}{11}\)
E. \(\frac{11}{9}\)
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: If a bag contains 18 yellow tiles and 22 black tiles, what i
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19 Sep 2018, 10:07
19 Sep 2018, 10:07
1
Carcass wrote:
If a bag contains 18 yellow tiles and 22 black tiles, what is the probability that a tile selected at random from the bag will be yellow?
A. \(\frac{1}{10}\)
B. \(\frac{9}{20}\)
C. \(\frac{11}{20}\)
D. \(\frac{9}{11}\)
E. \(\frac{11}{9}\)
A. \(\frac{1}{10}\)
B. \(\frac{9}{20}\)
C. \(\frac{11}{20}\)
D. \(\frac{9}{11}\)
E. \(\frac{11}{9}\)
Number of YELLOW tiles in bag = 18
TOTAL number of tiles in bag = 18 + 22 = 40
P(selected tile is yellow) = (# of possible outcomes in which the selected tile is yellow)/(TOTAL # of possible outcomes)
= 18/40
= 9/20
Answer: B
Cheers,
Brent
gmatclubot
Re: If a bag contains 18 yellow tiles and 22 black tiles, what i [#permalink]
19 Sep 2018, 10:07
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