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GRE Math Challenge #26-Judy is now twice as old as Adam
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07 Sep 2014, 06:42
07 Sep 2014, 06:42
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Question Stats:
90% (00:59) correct
9% (03:08) wrong based on 41 sessions
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Judy is now twice as old as Adam, but 6 years ago, she was 5 times as old as he was. How old is Judy now?
A. 10
B. 16
C. 20
D. 24
E. 32
A. 10
B. 16
C. 20
D. 24
E. 32
Re: GRE Math Challenge #26-Judy is now twice as old as Adam
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16 Jan 2018, 01:17
16 Jan 2018, 01:17
J=2A.
J-6=5(A-6)
Substitute J=2A
2A-6=5A-30
30-6=5A-2A
24=3A or A=8
Present age of Judy is J=2A
That is J=2x8=16.
J-6=5(A-6)
Substitute J=2A
2A-6=5A-30
30-6=5A-2A
24=3A or A=8
Present age of Judy is J=2A
That is J=2x8=16.
