What is the weight of 100 gallons of milk approximately measured to be?

The weight of 100 gallons of milk is approximately 850 pounds, as this takes into account the average density of milk. Milk typically weighs about 8.6 pounds per gallon. Therefore, when you multiply the weight per gallon by the total number of gallons, you get:

100 gallons x 8.6 pounds per gallon = 860 pounds.

In many contexts, however, 850 pounds is used as a rounded or estimated weight for practical purposes. This estimation aligns with industry standards, making the figure of 850 pounds the most commonly accepted approximation for the weight of 100 gallons of milk.

The other options do not align with the approximate weight based on the average density of milk. While 900 pounds might seem close, it overshoots the calculated value. Similarly, 820 pounds and 700 pounds are significantly lower and do not accurately reflect the average characteristics of milk's weight per volume.