<span>30 hours
For this problem, going to assume that the actual flow rate for both pipes is constant for the entire duration of either filling or emptying the pool. The pipe to fill the pool I'll consider to have a value of 1/12 while the drain that empties the pool will have a value of 1/20. With those values, the equation that expresses how many hour it will take to fill the pool while the drain is open becomes:
X(1/12 - 1/20) = 1
Now solve for X
X(5/60 - 3/60) = 1
X(2/60) = 1
X(1/30) = 1
X/30 = 1
X = 30
To check the answer, let's see how much water would have been added over 30 hours.
30/12 = 2.5
So 2 and a half pools worth of water would have been added. Now how much would be removed?
30/20 = 1.5
And 1 and half pools worth would have been removed. So the amount left in the pool is
2.5 - 1.5 = 1
And that's exactly the amount needed.</span>
What is the word problem?
Answer:
3(3 +4n)
OR
9 + 12n
Step-by-step explanation:
9 + 12n
Factorize it
3(3 +4n)
OR
The answer is the same.
Since we can't add a number with a number and letter. So in that case the answer is ;
9 + 12n.
<h3>Hope it helps!!</h3><h3><em>Please mark me as the brainliest</em><em>!</em><em>!</em><em>!</em></h3>
<em>Thanks</em><em> </em><em>!</em><em>!</em><em>!</em><em>!</em>
1.Dylan bought 3.5 meters of cloth for 94.5 pesos.How much does 1 meter og the cloth cost?
PLEASE I NEED IT NOW CAUSE IM EXPERIENCING DESPRESS I HOPE EVERYONE COULD HELP him
