SOLUTION: Lana is 4 years younger than three times her sister's age. If Lana is 14 years old, how old is her sister?

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Question 1037713: Lana is 4 years younger than three times her sister's age. If Lana is 14 years old, how old is her sister?
Found 3 solutions by stanbon, addingup, Vixiachase:
Answer by stanbon(75887)   (Show Source):
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Lana is 4 years younger than three times her sister's age. If Lana is 14 years old, how old is her sister?
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L = 3S-4
L = 14
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Equation:
3S-4 = 14
3S = 18
Sister = 6 yrs
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Cheers,
Stan H.
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Answer by addingup(3677)   (Show Source):
You can put this solution on YOUR website!
L = 3S-4
L = 14 Let's use this value for L in the equation above:
14 = 3S-4 Add 4 on both sides
18 = 3S Divide both sides by 3 and flip the equation so the variable is on the left side:
S = 6

Answer by Vixiachase(22)   (Show Source):
You can put this solution on YOUR website!