Jack ran 3.5 miles during each of his track practices. He also ran 6.5 miles on his own. So far, he has run a total of 13.5 miles. How many track practices must he have attended? Write and solve an equation to find the answer. track practices

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.