if two pipes are opened together the tank will be filled in 6 hour the first 5 feels the tank 5 hour faster than the other how many how was it is The foster pipe take to fill the tank completely
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Step-by-step explanation:
⇒ Let the slower pipe alone can fill the reservoir in xhrs.
⇒ Then, faster pipe alone can fill the reservoir in (x−10)hrs
⇒ Part filled by slower pipe in 1hr=
x
1
⇒ Part filled by faster pipe in 1hr=
x−10
1
If pipes functyions simultaneously, the reservoir will be filled in 12hrs
⇒ Part filled by both the pipes in 1hr=
12
1
∴
x
1
+
x−10
1
=
12
1
⇒ 12(x−10)+12x=x(x−10)
⇒ 12x−120+12x=x
2
−10x
⇒ x
2
−34x+120=0
⇒ x
2
−30x−4x+120=0
⇒ x(x−30)−4(x−30)=0
⇒ (x−30)(x−4)=0
∴ x=30or4
x cannot be 4 because $$(x-10) will be negative.
∴ x=30
⇒ Hours taken by second pipe take to fill the reservoir 30hours.
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