Urn 1 contains 5 red and 5 white balls. urn 2 contains 2 red and 7 white balls. a ball is drawn from urn 1 and placed in urn 2. then a ball is drawn from urn 2.
if the ball drawn from urn 2 is red, what is the probability that the ball drawn from urn 1 was red?
the probability is?
(type an integer or decimal rounded to three decimal places as needed.)

p (ball drawn from urn 1 was red) = 1/2

step-by-step explanation:

we are given that urn   1 contains 5 red and 5 white balls while urn 2 contains 2 red and 7 white balls.

if a ball is drawn from urn 1 and placed in urn 2 and then a ball from urn 2 is drawn, we are to find the probability that the ball drawn from urn 1 was red.

p (ball drawn from urn 1 was red) = = 1/2

the correct answer is 45x

9×5=45 then add the x