目前,Ram和Shyam的年龄比例分别为6:5。 7岁以后,Shyam的年龄将是32岁。拉姆(Ram)的年龄是多少?
(A) 32
(B) 40
(C) 30
(D) 36答案: (C)
解释:
Let the present age of Ram and Shyam be 6x years and 5x years respectively.
Then 5x + 7 = 32
∴ 5x = 25
∴ x = 5
∴ Present age of Ram = 6x = 30 years
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