SOLUTION: Mr. Li is 4 times the age of his son. Write the sum of their ages 6 years ago.

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Question 1061079: Mr. Li is 4 times the age of his son. Write the sum of their ages 6 years ago.
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
Mr. Li is 4 times the age of his son. Write the sum of their ages 6 years ago.
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L = 4S
Sum = 4S + 4S = 8S
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6 years ago:
Sum = L - 6 + 4S - 6 = L + 4S - 12
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Or,
Sum = 8S - 12

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