what is the cost of nine ounces of cheese at $.80 per pound?please help

16 ounces = 1 pound
9 ounces = 0.5625 pounds

3 answers

can you please solve it and explain me . thank you.
I would just use a simple ratio ...

x/9 = .8/16
x = 7.2/16 = $.45

check:
9 ounces = 9/16 of a pound
(9/16)(.8) = .45

(cheese at 80 cents per pound?? where? )
thank you so much