Team a and team B work together to build a road. When completing the task, team a builds 15 / 8 of the road. If team B works alone, it will take 24 days, and team a works alone, how many days

Team a and team B work together to build a road. When completing the task, team a builds 15 / 8 of the road. If team B works alone, it will take 24 days, and team a works alone, how many days

Because Party B needs (7 / 15) * 24 = 56 / 5 days to complete 1-8 / 15
That is, a 56 / 5 day repair 8 / 15
So (56 / 5) / (8 / 15) = 21 days
So it takes 21 days for a to be repaired alone

Team a and team B built a road together. When they finished the task, team a built 815% of the road. If team B finished it alone in 24 days, how many days did team a finish it alone? (Qingshan District, Wuhan City)

The working time of team a and team B: (1-815) △ 124, = 715 × 24, = 565 (days); team a does it alone for several days: 1 △ 815 △ 565, = 1 △ 121, = 21 (days). Answer: team a does it alone for 21 days

It will take 15 days for team a to build a road, 12 days for team B to build it alone, six days for team a to build it first, and the rest will be jointly built by team a and team B. how many days will it take for team a and team B to build it together?

(1-115 × 6) / (115 + 112) = (1-25) / (320 = 35 × 203 = 4 days) a: it will take four days for team a and team B to work together