Each polio waccination consists of 4 doses, and each measles vaccination consists of 2 doses. last year, Dr. Potter gave a total of 60 vaccinations that consists of a total of 184 doses. How many polio vaccinations and how many measles vaccinations did Dr. Potter give last year?

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.