Wo taps can fill a tank in 18 and 24 min respectively. when both the taps are opened find when the first tap be turned off so that the tank may be filled in 12 min
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....... HAY....
.... after only 9 days .....
BECAUSE Hera tap b fill only half of tank
in 12min
and left a fill in 9 min
.... after only 9 days .....
BECAUSE Hera tap b fill only half of tank
in 12min
and left a fill in 9 min
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