Therefore, it is clear that he is in the North from his house.
Hence required direction is South-West.
Hence he should go in the South-West direction.
Required distance = 40 - 20 = 20 km.
Statements:
Statements:
So, total weight of 10 poles = (20 x 10) kg = 200 kg.
From II, we conclude that:
Weight of each pole = (weight of 3 poles) - (weight of 2 poles) = 20 kg.
So, total weight of 10 pojes = (20 x 10) kg = 200 kg.
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