12 - [ 24 ÷ (3 + 1)] - 5 = N

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost

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.

Which expression gives the exact value of x?