Solve the following: ? % of 250 + 25% of 68 = 67

Let Y% of 250 + 25% of 68 = 67
⇒ (Y x 250)/100 + (25 x 68)/100 = 67
⇒ 5Y/2 = 50
∴ Y = (50 x 2) / 5 = 20