SOLUTION: Age Problems
Can you please help me write this into an equation.
Seven years ago, Meuy's age was three times her sister Mouang's age. At present Meuy is eight years older than
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Can you please help me write this into an equation.
Seven years ago, Meuy's age was three times her sister Mouang's age. At present Meuy is eight years older than
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Question 682744: Age Problems
Can you please help me write this into an equation.
Seven years ago, Meuy's age was three times her sister Mouang's age. At present Meuy is eight years older than her sister. Find Meuy's present age. Answer by MathTherapy(10551) (Show Source):
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Age Problems
Can you please help me write this into an equation.
Seven years ago, Meuy's age was three times her sister Mouang's age. At present Meuy is eight years older than her sister. Find Meuy's present age.
Let Meuy’s current age be M, and her sister, Mouang's current age, S
Then: M – 7 = 3(S - 7) ----- M – 7 = 3S – 21 ----- M – 3S = - 14 ----- eq (i)
Also, M = S + 8 ----- S = M – 8 ----- eq (ii)
M – 3(M – 8) = - 14 ------- Substituting M – 8 for S in eq (i)
M – 3M + 24 = - 14
– 2M = - 38
M, or Meuy’s current age = , or
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