butter and flour are mixed in the ratio 2:3. paul has 640 grams of butter and 880 grams of flour. how much more flour does he need?

80g

Step-by-step explanation:

Here's why:

SO you have 2:3 ratio which means the ratio for grams of butter/grams of flour has to be 2:3.

So we set up the following equation:

2/3 = 640/x (solve for x)

x = 960g

960g is what you should have to get to ratio, but the question is asking how much more you need from the initial given flour.

So you need (suppose x is the grams of flour you need)

x+880g = 960g (solve for x)

x=80g