Answer:
4A.Yes, they are proportional because if you increase or decrease either amount they will both change. They will always have the same size. For example if I want to double the flour, I will have to double the milk as well because they have the same ratio.
B.We are given that 8 oz of milk requires 15 oz of flour.
To know the amount of flour needed for 15 oz of milk,we will simply use across multiplication as follows:
Amount of flour needed = (15*15) / (8) =28.125 oz
5.You want 3/8 to eqaul 12/20.You can multiply the 3 by 4.That gets you 12 cherry halves.In order to keep the fractions the same you must also multiply the 8 by 4. Now you have 12/32
32-20=12.So you have to add you need to add 12 white grapes.