Question

There are red, blue, and black marbles in a bag. •The probability of pulling out a red marble is 2/5. •The probability of pulling out a black marble is 1/10. •One marble is pulled out at random. What is the probability the marble will be blue?

A. 7/10
B. 3/5
C. 1/2
D. 3/10

Answer 1

1/2

Explanation:

Because the 1/10 + 2/5 = 1/10 + 4/10 + 5/10 = 1/2

Answer 2

The probability is 1/2