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Can any one help me with this problem

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by kvcpk » Fri Jul 23, 2010 4:38 am
rzali wrote:John is 42 years old now and tom is 32 years old. how many years ago was John three times as old as Tom
A)7
B)17
C)27
D)30
E)None of these

Thanks
J = 42
T = 32
X years ago J will be J-X, Time will be T-X
J-X = 3(T-X)
42-x = 3(32-x)
42-x = 96-3x
2x = 54
x=27

pick C
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by gmatmachoman » Fri Jul 23, 2010 4:41 am
rzali wrote:John is 42 years old now and tom is 32 years old. how many years ago was John three times as old as Tom
A)7
B)17
C)27
D)30
E)None of these

Thanks
Pick C
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