Problem: a took 15 seconds to cross a rectangular field diagonally walking at the rate of 52 m / min and b took the same time to cross the same field along its sides walking at the rate of 68 m / min . the area of the field is ? 
Options: ['a ) 33', 'b ) 60', 'c ) 88', 'd ) 27', 'e ) 26']
b