Solution needs 6 liters of water to open gate?
Fill 7 Ltr jug from well 7 Ltr jug ->(pour into) 5 ltr jug
Unplug the 5 ltr jug 7 ltr jug -> 5 ltr jug fill 7 ltr jug from
the well. 7 ltr jug -> 5 ltr jug unplug the 5 ltr jug (You will
have 4 lrs in the 7 ltr jug and nothing in the 5 ltr jug) 7 ltr jug
-> 5 ltr jug fill the 7 ltr jug from the well 7 ltr jug -> 5
ltr jug You will have 6 ltrs of water in the 7 ltr jug which you
can put on the lever to open the gate Shailesh Singh Pakuranga,
Auckland