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If Susan was 31 years old 5 years ago, how old was she x years ago?

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If Susan was 31 years old 5 years ago, how old was she x years ago? [#permalink]

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New post 11 Oct 2017, 23:32
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C
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E

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Re: If Susan was 31 years old 5 years ago, how old was she x years ago? [#permalink]

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New post 11 Oct 2017, 23:33
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Re: If Susan was 31 years old 5 years ago, how old was she x years ago? [#permalink]

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New post 12 Oct 2017, 02:57
Bunuel wrote:
If Susan was 31 years old 5 years ago, how old was she x years ago?

(A) x – 36
(B) x – 26
(C) 36 – x
(D) 26 – x
(E) 26 + x


If Susan was 31 years old, 5 years ago, she must be 36 years old now.
So x years ago, Susan's age must be 36-x(Option C)
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Re: If Susan was 31 years old 5 years ago, how old was she x years ago? [#permalink]

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New post 16 Oct 2017, 16:47
Bunuel wrote:
If Susan was 31 years old 5 years ago, how old was she x years ago?

(A) x – 36
(B) x – 26
(C) 36 – x
(D) 26 – x
(E) 26 + x


We can let Susan’s current age = s; thus:

s - 5 = 31

s = 36

So, x years ago, she was 36 - x years old.

Answer: C
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Re: If Susan was 31 years old 5 years ago, how old was she x years ago?   [#permalink] 16 Oct 2017, 16:47
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