20 and 45
100 and 150
45 and 65
35 and 75
20 and 60
Correct answer is E
Son = x, Father = 3x, 12 yrs ago
son = x - 12, father = 3x - 12
3x - 12 = 6(x - 12)
3x - 12 = 6x - 72
3x = 60
x = 20
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