Correct Answer - Option 3 : 2511
The logic followed here is :
In each equation, first and second number are divided by 2 and the resultants are concatenated.
30 + 40 = 1520
30 ÷ 2 = 15; 40 ÷ 2 = 20; Therefore, 1520
36 + 28 = 1814
36 ÷ 2 = 18; 28 ÷ 2 = 14; Therefore, 1814
40 + 20 = 2010
40 ÷ 2 = 20; 20 ÷ 2 = 10; Therefore, 2010
50 + 22 =
50 ÷ 2 = 25; 22 ÷ 2 = 11; Therefore, 2511
Hence, option 3 is the correct answer.