Question 386601
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Hi,  
    mom is nine years times her daughter's age   
Let x and 9x represent daughter's and mother's ages NOW respectivley
Write as we Read***
 (9x+4) = 5(x + 4)
Solving for x
  9x + 4 = 5x + 20
      4x = 16
       x = 4, is the daughter's age.  Mother is 36 years old
CHECKING our Answer***
 40 = 5*8