Two numbers A and B are natural numbers, if (5/6) of A number is exactly (1/4) of B number. What is the minimum value of the sum of A and B?
甲、乙两数是自然数，如果甲数的(5/6)恰好是乙数的(1/4)．那么甲、乙两数之和的最小值是多少．
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