Student purchased 7 binders for a total of $8.61. write or type an equation that can be used to find the cost of each binder, n , in dollars. what is the cost in dollars, of each binder?

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.