An urn contains 27 red marbles, 24 blue marbles, and 36 yellow marbles. One marble is to be chosen from the urn without looking. What is the probability of choosing a red or a blue marble?

Question

Ibrahim Hammond

Mathematics

6 July, 13:22

An urn contains 27 red marbles, 24 blue marbles, and 36 yellow marbles. One marble is to be chosen from the urn without looking. What is the probability of choosing a red or a blue marble?

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Answers (2)

Know the Answer?

Sidney Rivas · Answer 1

31%

Step-by-step explanation:

27 + 24 + 36=87 27/87=.31 31%

Maliyah Baird · Answer 2

Step-by-step explanation:

Total number of marbles = 27+24+36=87

P of choosing a red marble=27/87

P of choosing a blue marble=24/87

P (R or B) = 27/87 * 24/87

=9/29*8/29 (both figures are already the smallest fraction)

=0.31*0.276

P=0.085