Answer:
A. 2.1 fluid ounces
Step-by-step explanation:
Following information given in the statement
8 ounce milk=270.0 mg calcium
we have to find how many ounce of milk=72.5 mg calcium
Let x be the amount of milk possess 72.5 milligrams of calcium.
So, x=(72.5*8)/270
x=580/270=2.148
Rounding x to nearest tenth
x=2.1
Hence, 2.1 ounce milk contains 72.5 mg calcium.