SOLUTION: please help me solve this problem. jessie is 5 years older than ariane. four years from now, the sum of their age will be three times jessie's age 4 years ago. how old are they now
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Question 450543: please help me solve this problem. jessie is 5 years older than ariane. four years from now, the sum of their age will be three times jessie's age 4 years ago. how old are they now? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! please help me solve this problem. jessie is 5 years older than ariane. four years from now, the sum of their age will be three times jessie's age 4 years ago. how old are they now?
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Equations:
j = a + 5
(j+4) + (a+4) = 3(j-4)
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Substitute for "j" and solve for "a":
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(a+9) + a+4 = 3(a+1)
2a+13 = 3a+3
a = 10 yrs (Ariane's age now)
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Solve for "j":
j = a + 5
j = 15 yrs (Jessie's age now)
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Cheers,
Stan H.
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