Question 516947
let the number of years be x

Ricky's age after x years = x+10

Father's age after 5 years = x+45

x+10= 1/5(x+45)+5

multiply equation by 5

5(x+10)=(x+45)+25
5x+50=x+45+25
5x-x=25-50+45
4x=20
x=5  years
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