А) 3:5 б) 49:28 в) 35:700 г) 5:7 д) 520:460 е) 27:81

а) 3:5 - This ratio can be simplified to 3/5. б) 49:28 - This ratio can be simplified to 7/4. в) 35:700 - This ratio can be simplified to 1/20. г) 5:7 - This ratio cannot be simplified any further. д) 520:460 - This ratio can be simplified to 26/23. е) 27:81 - This ratio can be simplified to 1/3.