A bag consists of 20 marbles, of which 5 are blue, 9 are red, and the remainder are white. If Lisa is to select a marble from the bag at random, what is the probability that the marble will be red or white?  Choose the correct option: A) 3/4 B) 2/4 C) 1/4 D) 1/8 E) 1/16
Bag consists of 20 marbles, of which 5 are blue, 9 are red   remainder are white. So, white = 20 - 5 - 9= 
<gadget id="calculator">20 - 5 - 9</gadget>
<output>6</output>
6.   probability that the marble will be red or white= probability that the marble will be red + probability that the marble will be white   probability that the marble will be red or white = 9/20+6/20 = 15/20 = 3/4   Hence, answer will be 3/4.
<result>A</result>
A bag consists of 20 marbles, of which 5 are blue, 9 are red, and the remainder are white. If Lisa is to select a marble from the bag at random, what is the probability that the marble will be red or white?