Father 7470

The father is eight years older than three times the son's age. In 20 years, the father will be two times as old as his son. How many years is a father, and how many are a son?

Correct answer:

o =  44
s =  12

Step-by-step explanation:


o=8+3s
o+20 = 2·(s+20)

o=8+3·s
o+20 = 2·(s+20)

o-3s = 8
o-2s = 20

Row 2 - Row 1 → Row 2
o-3s = 8
s = 12


s = 12/1 = 12
o = 8+3s = 8+3 · 12 = 44

o = 44
s = 12

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