A pipe is to be cut up such that the second piece is 3 inches shorter than the first and the third piece is four inches more than the first. How long is cach piece if the pipe is 84 inches long?

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.