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Una llave llena un depósito en 6 horas, y otra lo llena en 9 horas. ¿En cuánto tiempo lo llenarán si se abren al mismo tiempo ambas llaves?

Sagot :

Final answer:

Two keys together can fill the tank in 3 hours.


Explanation:

Llave 1 takes 6 hours to fill the tank, while llave 2 takes 9 hours. Combined, they fill the tank in 3 hours. To find this, you can use the formula: 1/x = 1/6 + 1/9. Solving for x, you get x = 3 hours.


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