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# How old is Jane? (1) Ten years ago she was one-third as old as she is

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Re: How old is Jane? (1) Ten years ago she was one-third as old as she is [#permalink]
Bunuel wrote:
How old is Jane?

(1) Ten years ago she was one-third as old as she is now.
(2) In 15 years, she will be twice as old as she is now.

DS89502.01
Quantitative Review 2020 NEW QUESTION

Either statement is independently sufficient. D

(1) j-10 = (1/3)*j

(2) j+15 = (2)*j
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Re: How old is Jane? (1) Ten years ago she was one-third as old as she is [#permalink]
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Bunuel wrote:
How old is Jane?

(1) Ten years ago she was one-third as old as she is now.
(2) In 15 years, she will be twice as old as she is now.

Jane is now x years old

(1) $$x-10=1/3x; 3x-30=x; 2x=30; x=15; \ sufficient.$$

(2)$$x+15=2x;x=15; \ Sufficient.$$

The answer is $$D$$
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Re: How old is Jane? (1) Ten years ago she was one-third as old as she is [#permalink]
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Re: How old is Jane? (1) Ten years ago she was one-third as old as she is [#permalink]
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