What Should Be The Value of The Fourth Column - With Answer

What Should Be The Value of The Fourth Column ?

Grey Black White Dots Puzzle with Answer | "Ithil Naalamathe Utharam Enthaanu"

ANSWER

61 is the Answer

Explanation

Let us assume;

x = Grey Dot

y = Black Dot

z = White Dot

From Coulmn 1 & 2:

Equation 1: 3x + y = 56

Equation 2: x + 3y = 48

On solving Equations 1 & 2, we get:

y = 11 

x = 15

From Coulmn 3:

Equation 3: 2z + x + y = 66

=> 2z + 15 + 11 = 66

=> z = 20

Solving Coulmn 4:

2x + y + z =?

=> (2 x 15) + 11 + 20

=> 61