SOLUTION: Joann is five years older than her sister Teresa, Joann's age is one less than twice Teresa's. Find the ages of both girls.

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Question 234711: Joann is five years older than her sister Teresa, Joann's age is one less than twice Teresa's. Find the ages of both girls.
Answer by stanbon(75887) About Me  (Show Source):
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Joann is five years older than her sister Teresa, Joann's age is one less than twice Teresa's. Find the ages of both girls.
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Equations:
j = t + 5
j = 2t - 1
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Substitute and solve for "t":
t+5 = 2t-1
t = 6 (Teresa's age)
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Since j= t+5, j=11 (Joann's age)
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Cheers,
Stan H.