The Down Under roller coaster rises up to 65.8 feet above the ground before dropping 90 feet into an underground cavern. Describe the height of the roller coaster at the bottom of the cavern.

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.