Question 933783
Molly is 20 years older than Sal. in three years Molly will be twice as old as Sal how old are they now?
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Equations::
M = S + 20
M+3 = 2(S+3)
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Substitute for "M" and solve for "S"::
S+20+3 = 2S+6
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Sally = 17 yrs (Sally's age now)
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Solve for "M"::
M = S + 20
Molly = 17+20 = 37 yrs (Molly's age now)
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Cheers,
Stan H.
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