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Twenty years ago , Morgan
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15 Aug 2021, 12:56
15 Aug 2021, 12:56
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Question Stats:
50% (00:53) correct
50% (00:58) wrong based on 4 sessions
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Twenty years ago , Morgan was 1/3 as old as he will be in 20 years. . How old will be Morgan in 5 years ?
Show: :: OA
45
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Re: Twenty years ago , Morgan
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15 Aug 2021, 22:02
15 Aug 2021, 22:02
1
Carcass wrote:
Twenty years ago , Morgan was 1/3 as old as he will be in 20 years. . How old will be Morgan in 5 years ?
Show: :: OA
45
Let the present age of Morgan be \(M\) yrs
20 yrs ago hw was = (M - 20) yrs old
In next 20 yrs he will be = (M + 20) yrs old
Now, \((M - 20) = \frac{1}{3}(M + 20)\)
\(3(M - 20) = M + 20\)
\(3M - 60 = M + 20\)
\(2M = 80\)
\(M = 40\)
In next 5 yrs he will be (40 + 5) = 45 yrs old
gmatclubot
Re: Twenty years ago , Morgan [#permalink]
15 Aug 2021, 22:02
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