let x be the number of large advertisements the newspaper sells, then 2x is the number of small ads it sells since this is twice as much. since large ads are sold for $35, the money gained for selling large ads is 35x, since small ads are for $25, the money gained from small ads are 25(2x)

so we have:

35x + 25(2x) = 935

=> 35x + 50x = 935

=> 85x = 935

=> x = 935/85 = 11 ........this is the number of large ads sold

so 2x = 22 .....................this is the number of small ads sold