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Three years ago, Sam was thrice as old as his son. Seven years later,
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08 Apr 2023, 10:17
08 Apr 2023, 10:17
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Question Stats:
83% (02:28) correct
16% (02:56) wrong based on 6 sessions
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Three years ago, Sam was thrice as old as his son. Seven years later, son’s age would be half the age of Sam. What is the present age of the son?
13
23
33
43
53
13
23
33
43
53
Re: Three years ago, Sam was thrice as old as his son. Seven years later,
[#permalink]
08 Apr 2023, 16:07
08 Apr 2023, 16:07
1
F - 3 = 3(S - 3) -- 1
F + 7 = 2(S + 7) -- 2
eq 2 - eq1 ==> 10 = -S + 23 ==> S = 13
F + 7 = 2(S + 7) -- 2
eq 2 - eq1 ==> 10 = -S + 23 ==> S = 13
gmatclubot
Re: Three years ago, Sam was thrice as old as his son. Seven years later, [#permalink]
08 Apr 2023, 16:07
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