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# Over a certain time period, did the number of shares of

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Intern
Joined: 18 Jul 2008
Posts: 34
Over a certain time period, did the number of shares of [#permalink]

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12 Aug 2008, 11:07
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Over a certain time period, did the number of shares of stock in Ruth's portfolio increase?

1. Over the time period, the ratio of the number of shares of stock to the total number of shares of stocks and bonds in Ruth's portfolio increased.

2. Over the time period, the total number of shares of stocks and bonds in Ruth's portfolio increased.

Can the ratio increase without increasing the numerator?

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Intern
Joined: 18 Jul 2008
Posts: 34

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12 Aug 2008, 11:20
great explanation, thanks.

Didn't think of number of bonds decreasing.....
SVP
Joined: 07 Nov 2007
Posts: 1738
Location: New York

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12 Aug 2008, 12:27
mba9now wrote:
Over a certain time period, did the number of shares of stock in Ruth's portfolio increase?

1. Over the time period, the ratio of the number of shares of stock to the total number of shares of stocks and bonds in Ruth's portfolio increased.

2. Over the time period, the total number of shares of stocks and bonds in Ruth's portfolio increased.

Can the ratio increase without increasing the numerator?

Question Is S increase?
1) S/S+B is increased.
B -- no. of bonds decreasing and .. and S constant.
B -- no. of bonds decreasing and .. and S may increase
insuffcient
2) S+B increased.
Its possible that S increase and B constant
Its also possible that S decrease and B increases in greater extent
insuffcient

combine
S+B INCREASED and S/(S+B) increased..
this is possible only when S is increased.

C sufficient

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Re: DS: Ratios   [#permalink] 12 Aug 2008, 12:27
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