A recipe needs 4/5 cup of butter for every 2 cups of flour. If you plan to use 3 cups of flour, how much butter will you need?

0.4 cups of flower (2/5)

Good luck!!

1 1/5 cups

Step-by-step explanation:

Write and solve an equation of ratios here.  Let x be the amount of butter needed if 3 cups of flour are used.  Then, comparing the quantities of butter first (in the first column) and the quantities of flour second, we get the ratio

  x                3 cups

=

(4/5) cup       2 cups

Cross-multiplying, we get:

2x = 12/5, or x = 6/5

You'll need 6/5 cups of butter, or 1 1/5 cups, if you're using 3 cups of flour.

answer: -8.2562234e+13

not sure but it may be b, as i said i'm not sure.