Question 258861: jack is 8 years older than jill. 7 years from now the sum of their ages will be 64. how old is jill now? Answer by Stitch(470) (Show Source):
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Let Jack's age = A
Let Jill's age = B
Equation 1: (Jack is 8 years older than Jill)
Equation 2: (To obtain their ages in seven years)
Solution
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Substitute equation 1 into equation 2 Combine like terms Subtract 22 from both sides Divide both sides by 2
(