Final answer:
To find out how many gallons could be sold daily in a school canteen with 700 students, set up a proportion using the given information and solve for the unknown variable. The answer is approximately 17.5 gallons.
Step-by-step explanation:
To find out how many gallons could be sold daily in a school canteen with 700 students, we can set up a proportion using the given information. If 50 gallons of milk is the average daily consumption in a canteen of 200 students, then the ratio becomes:
200 students / 50 gallons = 700 students / x gallons
Cross-multiplying, we get:
200 * x = 50 * 700
Simplifying the equation gives us:
x = (50 * 700) / 200
x = 3500 / 200
x = 17.5
Therefore, approximately 17.5 gallons of milk could be sold daily in a similar school canteen of 700 students.