Mathematics · Quantitative Comparison

Solve Quantity-I and Quantity-II to establish the correct relation between them and choose the correct option. Quantity I: 'A' alone can do a work in 30 hours. He completes 40% of the work and leaves the remaining work for 'B', who completes the remaining work alone in 12 hours. Find the time taken by 'B' to complete the entire work alone. Quantity II: 'A' is 25% more efficient than 'B' and 25% less efficient than 'C'. Find the time taken by 'A' and 'B' together to complete the work that 'C' alone can do in 16 hours.