Question

Marco is draining his two aquariums. The tanks are the same size. One tank has 7 in. of water in it, and it is being drained at a rate of 1 in./min. The other tank has 5 in. of water in it. It is being drained at a rate of 0.5 in./min. After how many minutes will the tanks contain the same amount of water?

Answer 1

in 4 minutes the first tank would have 3 in of water and the other would also have 3 in