Answer:
To find out how much milk Hasina needs to steam to mix with 12 fl oz of hot tea, we need to use the ratio provided: 4 parts hot tea to 3 parts milk.
1. First, we need to determine the total parts in the ratio:
Total parts = 4 (hot tea) + 3 (milk) = 7 parts
2. Then, we find the fraction of the ratio that represents milk:
Fraction of milk = 3 parts / 7 parts
3. Next, we calculate the amount of milk needed for 12 fl oz of hot tea:
Milk needed = Fraction of milk * 12 fl oz
Milk needed = (3/7) * 12 fl oz
≈ 5.14 fl oz
Hasina needs approximately 5.14 fl oz of milk to mix with 12 fl oz of hot tea according to the given ratio.