Q: Pipe A can fill a tank in 4 hours and pipe B can fill it in 6 hours – McqOptions

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1.	Q: Pipe A can fill a tank in 4 hours and pipe B can fill it in 6 hours. If they are opened on alternate hours and if pipe A is opened first then in how many hours, the tank shall be full?
A.	$$3{1\over 2}\ hrs$$
B.	$$3{1\over 4}\ hrs$$
C.	$$4{1\over 2}\ hrs$$
D.	$$4{2\over 3}\ hrs$$
Answer» E.

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