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If s and t are positive integers such that s/t = 64.12 which

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Intern
Joined: 14 Apr 2015
Posts: 9
Location: Viet Nam
Schools: HBS '21
GPA: 3.1
Re: If s and t are positive integers such that s/t = 64.12 which  [#permalink]

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10 Nov 2019, 20:30
1
s/t = 64.12
=> Remainder number: r = t * 0.12
=> $$\frac{r}{t}=\frac{3}{25}$$
=> r must be a multiple of 3; (t must be a multiple of 25)
=> 45 is the multiple of 3
Intern
Joined: 30 May 2013
Posts: 6
Re: If s and t are positive integers such that s/t = 64.12 which  [#permalink]

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11 May 2020, 06:24
Hi - i feel like i'm something trivial here. please can you help?

so s/t = 64.12 so s/t = 64 + 12/100. i got to this point and i was hoping to find 12 as the remainder. But this needs to be simplified to get to 3/25. how would you know that the 12/100 needed to be simplified please? (i took another example 11/5 and and that needs to be simplified to get to remainder of 1 too). I feel like i'm misunderstanding a property of factors? thank you in advance for your help!
Re: If s and t are positive integers such that s/t = 64.12 which   [#permalink] 11 May 2020, 06:24

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