345) Find how many people

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ern5231: Master | Next Rank: 500 Posts; Posts: 226; Joined: Sun Aug 09, 2009 4:34 am

by ern5231 » Tue May 18, 2010 6:09 am

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Source: Beat The GMAT — Data Sufficiency | Tue May 18, 2010 6:09 am

asamaverick: Master | Next Rank: 500 Posts; Posts: 106; Joined: Mon Sep 28, 2009 9:29 amFollowed by: 2 members; Location: Boston, MA; Thanked: 26 times; GMAT Score:700

by asamaverick » Tue May 18, 2010 6:35 am

The Answer E.

The statements alone are not sufficient. When the two statements are combined:
%93 + %94 = 90
%94 +%95 = 90
We can deduct that People aged 93 & 95 must have the same % and it must be <= 10% (so that total % is not over 100).
Some examples that fit in are:

%93 --- % 94 --- % 95
1 --- 89 --- 1
3 --- 87 --- 3
10 --- 80 --- 10
This information is not enough to narrow down to one answer for percentage of people aged 93 & 95.

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kstv: Legendary Member; Posts: 610; Joined: Fri Jan 15, 2010 12:33 amFollowed by: 2 members; Thanked: 47 times

by kstv » Sat May 22, 2010 12:04 am

asamaverick wrote:The Answer E.

The statements alone are not sufficient. When the two statements are combined:
%93 + %94 = 90
%94 +%95 = 90
We can deduct that People aged 93 & 95 must have the same % and it must be <= 10% (so that total % is not over 100).
Some examples that fit in are:

%93 --- % 94 --- % 95
1 --- 89 --- 1
3 --- 87 --- 3
10 --- 80 --- 10
This information is not enough to narrow down to one answer for percentage of people aged 93 & 95.

Unless there are only three age groups. In which case it is option C.

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