A question is followed by data in the form of two statements labelled as I and II. You must decide whether the data given in the statements are sufficient to answer the questions.
What is $$x_1 + x_2 + x_3 + x_4 + x_5 ?$$
I. $$x_3 = 20$$
II. $$x_1, x_2, x_3, x_4, x_5$$ are in arithmetic progression.
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