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# m10 q5

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Intern
Joined: 23 Mar 2010
Posts: 23

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17 Apr 2010, 08:18
What is the ratio of the area of a TV screen with a diagonal of 18'' to that of a screen with a diagonal of 15''?

The ratio of width to length is the same for both screens.
The width of the 18''-screen is 20% greater than that of the 15''-screen.
Statement (1) ALONE is sufficient, but Statement (2) ALONE is not sufficient
Statement (2) ALONE is sufficient, but Statement (1) ALONE is not sufficient
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient
EACH statement ALONE is sufficient
Statements (1) and (2) TOGETHER are NOT sufficient

OA:
[Reveal] Spoiler:
D

Why?

from statement 2 i get:

l1^2 + w1^2=18^2

l2^2 + 1.2w1^2=15^2.

I dont see how the rectangles are similar...dont we need a relation between l1 and l2 as well?
m10 q5   [#permalink] 17 Apr 2010, 08:18
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# m10 q5

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