Question 1152059
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The statement of the problem is meaningless....<br>
"... in four years time (the man) will be..."<br>
(a) "... three times AS OLD AS his son."  -->  the son is x; the man is 3x
(b) "... three times OLDER THAN his son."  -->  the son is x; the man is x+3x = 4x
(c) "... three times AS OLDER THAN his son."  nonsense....<br>