Father 7222

Now a father is five times as old as a son. In 2 years, the father will be four times as old as the son. How old is Dad, and how many are Son now?

Correct answer:

o =  30
s =  6

Step-by-step explanation:


o=5s
o+2 = 4(s+2)

o=5·s
o+2 = 4·(s+2)

o-5s = 0
o-4s = 6

Row 2 - Row 1 → Row 2
o-5s = 0
s = 6


s = 6/1 = 6
o = 0+5s = 0+5 · 6 = 30

o = 30
s = 6

Our linear equations calculator calculates it.



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