A can do a work in 15 days and B in 20 days. They work together for 6 days, then A leaves. In how many more days will B finish the remaining work? MCQ with Answer and Explanation

Explanation:
Original 100, new 130. Decrease % = (30/130)×100 ≈ 23.08%.

Explanation:
10% of 200 = (10 / 100) * 200 = 20.

Explanation:
Let boys = 60, girls = 40. Total = 100. Adult boys = 20% of 60 = 12. Adult girls = 25% of 40 = 10. Total adults = 22. Non-adults = 100 - 22 = 78. Percentage = 78%.