SOLUTION: seven years ago jackson's age was 2/5 of the age he will be 20 years from now. how old is jackson now

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Question 694951: seven years ago jackson's age was 2/5 of the age he will be 20 years from now. how old is jackson now
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
seven years ago Jackson's age was 2/5 of the age he will be 20 years from now.
j - 7 = 2%2F5(j+20)
j - 7 = .4(j+20)
j - 7 = .4j + 8
j - .4j = 8 + 7
.6j = 15
j = 15/.6
j = 25 yrs old now
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