Answer:
75 minutes
Step-by-step explanation:
The rate at which the tank is filled up, F, and emptied, E, are respectively:
Since V is the full volume of the tank, the time required to fill the tank if both pipes are open is given by:
It will take 75 minutes to fill the tank if both pipes are open.
Hello there!
Explanation:
↓↓↓↓↓↓↓↓↓↓↓↓
First you had to switch sides.
Then you divide by -4 from both sides of the equation.
Simplify
Next you had to add by 5 from both sides of the equation.
Simplify
You can also divide by 2 from both sides of the equation.
Simplify it should be the correct answer.
<u><em>Answer⇒⇒⇒⇒⇒r=-9</em></u>
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-Charlie