In a bag there are 10 black balls and 25 blue balls and 15 white balls. A ball is drawn at random. What is the probability of getting a white ball?	Choices: A) 2/5 B) 3/10 C) 4/10 D) 5/10 E) 3/5
total balls = 10+25+15= 
<gadget id="calculator">10+25+15</gadget>
<output>50</output>
50   probability of getting a white ball= 15/50 = 3/10 . correct option is 3/10
<result>B</result>
In a bag there are 10 black balls and 25 blue balls and 15 white balls. A ball is drawn at random. What is the probability of getting a white ball?