A bag consists of 20 marbles, of which 6 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 one:  A) 7/10  B) 2/4  C) 1/4  D) 1/8  E) 1/16
bag consists of 20 marbles, of which 6 are blue, 9 are red   remainder are white. So, white = 20 - 6 - 9= 
<gadget id="calculator">20 - 6 - 9</gadget>
<output>5</output>
5.   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+5/20 = 14/20 = 7/10   Hence, answer will be 7/10.
<result>A</result>
A bag consists of 20 marbles, of which 6 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?