If the average (arithmetic mean) of the four numbers K, 2K + 3, 3K – 4 and 5K + 1 is 63, what is the value of K?\nOptions:\n(A)  22 10/11\n(B)  15 3/4\n(C)  22\n(D)  23\n(E)  25 3/10 OK. Let's think. Some random thoughts first:
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K + 2K +3 + 3K - 4 + 5K +1 = 11K\n(11K -1)/4 = 63\n11K = 63 * 4 = 252\nK = 252 / 11 = 22 10/11 The answer: (A).
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