we have ... suppose x inch from one corner and other x inch from other corner

x + 25.1/2 + x = 60

2x + 51/2 = 60

2x = 60 - 51/2

2x = (120-51)/2

2x = 69/2

x = 69/4 which can also be written as 17 1/4 inch

the correct option is B

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