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# Toshi is four times as old as Kosuke. In x years Toshi will be three

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Math Expert
Joined: 02 Sep 2009
Posts: 58427
Toshi is four times as old as Kosuke. In x years Toshi will be three  [#permalink]

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19 Aug 2018, 09:41
00:00

Difficulty:

35% (medium)

Question Stats:

71% (01:11) correct 29% (01:39) wrong based on 19 sessions

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Toshi is four times as old as Kosuke. In x years Toshi will be three times as old as Kosuke. How old is Kosuke, in terms of x?

(A) 2x
(B) 3x
(C) 4x
(D) 8x
(E) 12x

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Joined: 20 Feb 2015
Posts: 760
Concentration: Strategy, General Management
Re: Toshi is four times as old as Kosuke. In x years Toshi will be three  [#permalink]

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19 Aug 2018, 10:51
Bunuel wrote:
Toshi is four times as old as Kosuke. In x years Toshi will be three times as old as Kosuke. How old is Kosuke, in terms of x?

(A) 2x
(B) 3x
(C) 4x
(D) 8x
(E) 12x

t=4k
t+x=3(k+x)
substituting the value
4k+x=3k+3x
k=2x
Re: Toshi is four times as old as Kosuke. In x years Toshi will be three   [#permalink] 19 Aug 2018, 10:51
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# Toshi is four times as old as Kosuke. In x years Toshi will be three

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