Sue has 55 inches of ribbon she wants to cut the ribbon in to six equal pices how long will each pice be

Can someone me find the original price? the discount is 5% and the sale price is $68.40

Aculinary club earns $1360 from a dinner service. they sold 45 adult meals and 80 student meals. an adult meal costs twice as much as a student meal. what is the cost of an adult meal?

Combine like terms to create an equivalent expression. make sure to simplify coefficients and constants as well. -6/5-2/3v+4/15+1/3v