26. An industry uses three methods M1,M2, and M3 to train their workers. Of all the workers trained, 50% are trained by method M1, 28% by method M2, and the rest, 22%, by method M3. Further 10% of those trained by method M1 do not perform their job well, while 5% trained by method M2 and 15% by methods M3 also do not perform their job well. A randomly selected worker does not perform his job well.

Find the probability that the worker was trained by

(a) method M1,

(b) method M2, and

(c) method M3.