The Solution:
Given:
Chris buys 3 pounds of coffee every week.
But this week, Chris only bought 3/5 of the amount he usually buys every week.
So,
[tex]\frac{3}{5}\times3\text{ pounds}=\frac{9}{5}pounds=1.8\text{ pounds of coffee.}[/tex]Therefore, the correct answer is 1.8 pounds of coffee.
