IMO 756 is answer..?ddm wrote:help
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Source: Beat The GMAT — Problem Solving |
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dally_gmat
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Here it is
Complete length is 54 inches (4.5 feet)
There are 3 strips of 4 inches in length
so legth without strips will be 54 - 12 = 42
this 42 is length of 2 windows
so length of 1 window = 21
Similarly breadth becomes 9 [as this also has 3 strips]
Now Are of 1 wondow is 21 * 9 [l * b]
total we have 4 windows so are becomes 21 * 9 * 4 = 756
Let me know if you need picture explaning all this
Complete length is 54 inches (4.5 feet)
There are 3 strips of 4 inches in length
so legth without strips will be 54 - 12 = 42
this 42 is length of 2 windows
so length of 1 window = 21
Similarly breadth becomes 9 [as this also has 3 strips]
Now Are of 1 wondow is 21 * 9 [l * b]
total we have 4 windows so are becomes 21 * 9 * 4 = 756
Let me know if you need picture explaning all this
