Answer:
I dont understand the question
Step-by-step explanation:
(200g / 1c) x (0.9g / 1c) x (1/2)
180 x (1/2)
90g
Yes, any number that doesn't repeat for along time, such as 2/3, 1/3, etc, would be considered rational, its those numbers that don't end that are irrational, meaning 0.59 is rational.