Answer:
25 minutes
Explanation:
let x = number of minutes
the following equation can be derived from the question
9.2 + 2.4x = 109.2 - 1.6x
the equations are equated together because it is expected the gallons of water in both tanks would be equal after sometime
collect like terms
2.4x + 1.6x = 109.2 - 9.2
4x = 100
x = 100/4 = 25 minutes