Question

the mean of the ages of father and his son is 27 years. after 18 years, father will be twice as old as his son. their present ages
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Answer 1

Answer:

45 yearstheir parents age

Answer 2

Step-by-step explanation:

Let the present ages of the father and the son be F and S

F+S = 2×27 = 54

F = 54-S.....(i)

F+18 = 12(S+18),or

F = 2S+36-18,or

F = 2S+18.......(ii)

Equate (i) and (ii)

54-S = 2S+18

3S = 36,or

S = 12 and F = 54-12= 42

The father is 42 years and the son 12 years,now