What 3 even numbers add up to 54

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

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4

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.