A student's scores on 5 tests are 93%, 89%, 72%, 80%, and 96%. What must the student score on the sixth test so that the average will be 88%?

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.