Final answer:
It will take 28 days for all 63 gallons of milk to leak out of the milk tower.
Step-by-step explanation:
To find the number of days it takes for all 63 gallons of milk to leak out of the milk tower, we need to divide the total amount of milk by the rate of leakage. The rate of leakage is given as 9 gallons every 4 days. We can set up a proportion to solve for the number of days:
9 gallons / 4 days = 63 gallons / x days
To solve for x, we can cross multiply:
9x = 63 * 4
9x = 252
Dividing both sides by 9, we get:
x = 28
Therefore, it will take 28 days for all 63 gallons of milk to leak out of the milk tower.