If it takes 3,127 feet of computer cable to wire an office building, how much cable will be left if the wire is taken from a 5,000 foot reel?

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.