the present age of a son is half the age of his father . ten yrs ago the father was thrice as old as the son . what is their present age
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Answer:
= 20 yrs
Step-by-step explanation:
Let mother's age be 2x
Let son's age be x
= (2x-10) = 3(x-10)
= 2x-10 = 3x-30
= 2x-3x = -30+10
= -x = -20
= x = 20
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