Question 147425
Mr.Reyes is 20 years older than his son, 
R = s + 20
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how old are the father and the son if Mr. Reyes is a 6 times as old as his son?
R = 6s
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Solve by substitution:
6s = s+20
5s = 20
s = 4 yrs old (Son's age)
R = s+20 = 4+20 = 24 yrs old (Mr. Reyes age)
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Cheers,
Stan H.