Both A and B are natural numbers, and their prime factors are A=2*5*C; B=3*5*C. If the least common multiple of A and B is 60, then C=how much.
A和B都是自然数，分解质因数A=2*5*C；B=3*5*C．如果A和B的最小公倍数是60，那么C=多少．
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