Question

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

Answer 1

Explanation:

Ratio is 640 grams butter to x grams of flour =2/3. 2/3=640/x

Cross multiply. 2x=3*640 2x=1920 x=960

Proof: 640/960 = 2/3