posted by Nabiha .
A company assembles drills using components from two sources. Acemart supplies 91% of the components and Begud supplies the rest. It is known that 6% of the components supplied by Acemart are faulty and 3% of those supplied by Begud are faulty.
a) represent this info on a tree diagram (could this be explained as I don't understand how to do this with the info provided)
b) an assembled drill is selected at random- find the probability that it isn't faulty.