SOLUTION: gary is twice as old as pat. twenty years ago, gary was six times as old as pat. what are their present age?
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Question 853824: gary is twice as old as pat. twenty years ago, gary was six times as old as pat. what are their present age?
Answer by chndnbl(31) (Show Source): You can put this solution on YOUR website!
Let pat present age be x.
Then gray present age is 2x.
20 years ago,
pat age=x-20
gray age=6(2x-20)
then we get,
2x / x = 6(2x-20) / x-20
2(x-20) = 6(2x-20)
2x - 40=12x - 120
12x - 2x = 120 - 40
10x = 80
x = 8 years and
gray present age =2x=16 years
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