Question 657502:  Sarah is three more than four times John's age. The difference in their ages is 33. How old is Sarah? 
 Answer by colliefan(242)      (Show Source): 
You can  put this solution on YOUR website! If x=John's age, Sarah's age is 4x+3
 
If the difference is 33:
 
(4x+3)-x=33 
4x-x+3=33 
3x+3=33 
3x+3-3=33-3 
3x+0=30 
3x=30 
3x/3=30/3 
x=10
 
If John's age is x, it is 10. 
If Sarah's is 4x+3, it is 43.
 
Is the difference 33? YES!
 
 
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