In a bag, 60% are red balls, 30% are blue balls, and the rest are green balls. If 5% of red, 10% of blue, and 20% of green balls are defective, what percent of the total balls are defective? MCQ with Answer and Explanation

Explanation:
x × 1.2 × 1.25 = 150 → 1.5x = 150 → x = 100.

Explanation:
1.15 × 0.85 = 0.9775, 2.25% decrease.

Explanation:
Pass marks = 105, 35% of Max = 105 → Max = 105/0.35 = 300. Wait, 105/0.35 = 300. I'll correct: 35% of Max = 105 → Max = 300. But options: 250,300,350,400. So answer is 300. I'll set correct_answer B.