Please Help Me! I need to pass. Emma bought a golf club that was marked down 50% from an original price of $80. If she paid 5% sales tax, what was the total cost of the golf club?

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.