SOLUTION: Four years from now Jackie will be twice mary's age. mary is now 3, how old is jackie?

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Question 252382: Four years from now Jackie will be twice mary's age. mary is now 3, how old is jackie?
Found 2 solutions by checkley77, stanbon:
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
M=3
J+4=2(3+4)
J+4=2*7
J=14-4
J=10 YEARS OLD IS JACKIE NOW.
PROOF:
10+4=2*7
14=14

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Four years from now Jackie will be twice mary's age. mary is now 3, how old is jackie?
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NOW DATA:
Let Jackie be "j" yrs. old.
Mary is 3 yrs old.
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4 yrs from now DATA:
Jackie will be "j+4" yrs. old.
Mary will be 7 yrs old.
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Equation:
j+4 = 2*7
j = 10 yrs old (Jackie's age NOW)
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Cheers,
Stan H.