Aswimming pool is being drained with a pump. the pump drains the pool at a constant rate, the pool's water level drops 3 inches in 6 hours was the rate per hour of the water level change?

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.