SOLUTION: Sam is 102 years younger than Jessica. 6 years ago, Jessica's age was 4 times Sam's age. How old is Sam now?

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Question 1175788: Sam is 102 years younger than Jessica. 6 years ago, Jessica's age was 4 times Sam's age. How old is Sam now?
Answer by Alan3354(69443) About Me  (Show Source):
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Sam is 102 years younger than Jessica.
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S = J - 102
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6 years ago, Jessica's age was 4 times Sam's age.
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J-6 = 4*(S-6)
J-6 = 4S-24
J+18 = 4S
J+18 = 4*(J-102) = 4J-408
3J = 426
J = 142
How old is Sam now?
S = 40