A) ??????????? ?13??????????? ??????????????????
B) ??????????? ?15
C) ??????????? ?17??????????? ??????????????????
D) ??????????? ?20
Correct Answer: A
Solution :
??????????? ?According to the statement, the age of the father is double the age of his son. So the present age of the son is 18 years of age and five years ago, he must have bun 13 years of age.You need to login to perform this action.
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