Container a has 200 l of water and is being filled at a rate of 6liters per minute container b has 500 l of water and is being drained at 6liters per minute how many minutes will it take for the two containers to have the same amount of water ?

The midpoint of the differing volumes is 350L, 150L each way. 150L divide by 6L per minutes is 25. The answer is 25 minutes.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.