Answer to Question #25389 in Algebra for herin
If they work together we need to add speeds of filling:
V/X + V/Y = V/6,
V - volume of tank
Finally, we have a system of equations:
And X>0 and Y>0 ( because it's time)
From the first: X=Y+5
From the second:
Y1 = -3
X = 10+5 = 15
Answer: 10 and 15 hours.
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