anonymous
  • anonymous
Jack's age next year will be twice Jill's age last year. Their present age will present ages total 45. How old is each now?
Algebra
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
... This is a duplicate...
anonymous
  • anonymous
2 independent eqns and 2 unknowns. get x and y.

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anonymous
  • anonymous
@heyyygirrrl you got this?
anonymous
  • anonymous
it is actually not that easy
anonymous
  • anonymous
here is an easier way put jack's age as \(x\) and since the total is 45 jill's age must be \(45-x\)
anonymous
  • anonymous
jack's age next year will be \(x+1\) and twice jills age last year will be \(2(44-x)\)
anonymous
  • anonymous
solve \[x+1=2(44-x)\] in a couple steps \[x+1=88-2x\] \[3x+1=88\] \[3x=87\] and finally divide by \(3\)
anonymous
  • anonymous
29

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