Question 18
Teams A and B each have 10 workers. They must build a road and a bridge. Team A can build the road in 14 days and the bridge in 25 days. Team B can build the road in 18 days and the bridge in 15 days. A new team C consists of five workers from A and five from B. Team C builds the road first, then the bridge. How long does it take to finish both?
Practice clarification: workers within each original team work at equal, constant rates, and their rates add when they work together.
Practice clarification: workers within each original team work at equal, constant rates, and their rates add when they work together.