What will be the total weight of 10 poles, each of the same weight? Statements: I. One-fourth of the weight of each pole is 5 kg. II. The total weight of three poles is 20 kg more than the total weight of two poles.

I alone is sufficient while II alone is not sufficient
II alone is sufficient while I alone is not sufficient
Either I or II is sufficient
Neither I nor II is sufficient

Correct answer: Either I or II is sufficient

Solution

Statement I gives one-fourth of a pole as 5 kg, so one pole weighs 20 kg and 10 poles weigh 200 kg. Statement II gives 3p = 2p + 20, so one pole weighs 20 kg again. Hence either statement alone is sufficient.

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