15. Determine the probability of picking a ball

A bag contains 12 green balls and '\(x\)' pink balls. If one ball is drawn at random then find the following:

 

i) What is the probability that it will be a pink 

 

(ii) If 8 more red balls are put in the bag and if the probability of drawing a red ball will be twice that of the probability in (i) then find the value of '\(x\)'.

\(x =\)