sarat0994 wrote:
Explanation: If the perimeter of the window is 28 feet, 2l + 2w = 28, or
l + w = 14.
Statement (1) is insufficient. Since l + w = 14 and the two dimensions are
2 apart, l and w must be 6 and 8. However, we don’t know which is which.
Statement (2) is sufficient. Here, we’re given a relationship between the two
dimensions and we know which is which. If l = w +1/3w, we can solve:
l + w = 14
4/3w + w = 14
7/3w = 14
w = 14( 3/7) = 6
l = 8
Choice (B) is correct.
even i am not convinced with this reasoning,hence i have posted the question here.
IMO this reasoning is correct. The length and the width can take any value among 6 and 8. So option A is insufficient.
With information given in option B we can find out the values of the length and the width. So option B is sufficient.
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