Carla has 9 cans of paint. it takes 1/2 can of paint to paint a chair. how many chairs can she paint with her 9 cans of paint?

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.