Question 87499
S is 1/4 if the age of father. in 12 years he will be 2/5 of the age of father so what is their ages now? 
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Ages NOW DATA:
Let S be x yrs. old ; Father is 4x yrs old.
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In 12 years DATA:
S will be x+12 ; Father will be 4x+12
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EQUATION:
x+12 = (2/5)(4x+12)
5x+60 = 8x+24
3x = 36
x = 12 yrs old (S's age NOW)
4x = 48 yrs old (Father's age NOW)
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Cheers,
Stan H.