SOLUTION: at present John's age is 30% of his father's age . Twenty years from now, John's age will be 58% of his father's age . How old are they?
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Question 848223: at present John's age is 30% of his father's age . Twenty years from now, John's age will be 58% of his father's age . How old are they? Answer by swincher4391(1107) (Show Source):
You can put this solution on YOUR website! j = .3f
j+20 = .58(f+20)
.3f + 20 = .58(f+20)
.3f + 20 = .58f + 11.6
.28f = 8.4
f = 30
j = 30*.3 = 9
