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?
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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?
- 1$$3{1\over 2}\ hrs$$false
- 2$$3{1\over 4}\ hrs$$false
- 3$$4{1\over 2}\ hrs$$false
- 4$$4{2\over 3}\ hrs$$true
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