Hello,
School A : 2x + 60 = 360 ⇔ 2x = 300 ⇔ x = 300/2 = 150
Number of students who tigers are their favorite animal : 150 × 480/360 = 200
School B : right angle ⇒ 90²
Number of students who tigers are their favorite animal : 90 × 760/360 = 190
We have 200 ≠ 190 ⇒ Wrong