Lee is

Lee is eight years more than twice Parker's age. Four years ago, Lee was three times as old. How old was Lee 4 years ago?

Correct answer:

l =  36

Step-by-step explanation:


l = 3p
l+4 = 8 + 2·(p+4)

l = 3·p
l+4 = 8 + 2·(p+4)

l-3p = 0
l-2p = 12

Row 2 - Row 1 → Row 2
l-3p = 0
p = 12


p = 12/1 = 12
l = 0+3p = 0+3 · 12 = 36

l = 36
p = 12

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