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

Remember to enter a numerical answer.

Question

Yuliana Chung

Chemistry

30 July, 00:32

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

Remember to enter a numerical answer.

+1

Answers (1)

Know the Answer?

Megan Branch · Answer 1

Let x be the number of minutes it takes for the two tanks to contain the same amount of water, then

7 - x = 5 - 0.5x

-0.5x + x = 7 - 5

0.5x = 2

x = 2/0.5

x = 4 mins

Therefore, the tanks will contain the same amount of water after 4 mins.