Tortoise Glass Cylinder Puzzle | with Answer

Tortoise Glass Tank Puzzle - Can You Solve it ?

ANSWER
65 is the answer

Explanation
Equation 1: 10 + 10 + 10 = 30  (Tortoise = 10)
Equation 2: 10 + 5 + 5 = 20  (Glass = 5)
Equation 3: 5 + 8 + 8 = 21  (Cylinder = 8 ; Note that 1 cylinder = 4 (2 + 2) as there are 2 black stripe)
Equation 4: 5 + (6 x 10) = 65  (Here cylinder = 6, because there are 3 black stripes for the cylinder in this equation (2 + 2 + 2))