Question 901630
Paula is 12 yrs older than her brother bob. Four yrs from now bob will be two thirds as old as Paula. How old are they ?
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let x=Bob's age
x+12=Paula's age
..
4 yrs from now:
x+4=Bob's age
x+12+4=x+16=Paula's age
x+4=(2/3)*(x+16)
lcd:3
3x+12=2x+32
x=20
x+12=32
Bob's age=20
Paula's age=32