A rectangular lawn 60 metres by 40 metre...

A rectangular lawn 60 metres by 40 metres has two roads each 5 metres wide running in the middle of it. One parallel to length and the other parallel to breadth. The cost of gravelling the roads at 60 paise per sq. metre is -----

A)₹300

B)₹280

C)₹285

D)₹250

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