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1 pipe can drain a swimming pool in 4 hours. A second pipe can drain the pool in 6 hours. How long will it take to drain the pool if both pipes are used?

3 hours
2 2/5 hours
10 hours
2 hours​

Respuesta :

choice 2 it can only be used for about 2/5 hours

Answer:

[tex]2 \dfrac25[/tex]

Step-by-step explanation:

The first pipe drains 1/4 of the pool every hour, and the second pipe drains 1/6 of the pool every hour. Combined, they drain [tex]\dfrac14 + \dfrac16 = \dfrac{5}{12}[/tex] of the pool per hour. Therefore, it will take 12/5 hours, or 2 2/5 hours.

(brainliest pls ty)

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