There are two bags, one of which contains 5 red and 7 white balls and the other 3 red and 12 white balls. A ball is to be drawn from one or other of the two bags ; find the chances of drawing a red ball.	Pick:
A) 7/120 B) 17/120 C) 27/120 D) 37/120 E) 47/120
P(Getting a red ball from the first bag): (1/2)*(5/12)   P(Getting a red ball from the 2nd bag): (1/2)*(3/15)   P(37/120rawing a red ball):   (1/2)*(5/12)+(1/2)*(3/15)= 37/120   ANSWER:37/120
<result>D</result>
There are two bags, one of which contains 5 red and 7 white balls and the other 3 red and 12 white balls. A ball is to be drawn from one or other of the two bags ; find the chances of drawing a red ball.