# Two water containers

In the first container, there are 200 m

^{3}of water and in the second 40 m^{3}. The first container will flow down at a rate of 10 m^{3}water per hour. At the same time flows to the second rate of 5 m^{3}per hour. After how many hours there will be three times less water in the first container than in the second?### Correct answer:

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