For a certain project, if it is contracted by Party A and Party B, it will be completed in two fifths of the day, and the project payment will be 1800 yuan; if it is contracted by Party B and Party C, it will be completed in three fifths of the day, and the project payment will be 1500 yuan; if it is contracted by Party A and Party C, it will be completed in two fifths of the day, and the project payment will be 1600 yuan, And the project payment is the least. Which team should the project be contracted to and how much is the project payment? Team a, B and C contract a project and get a total salary of 21600 yuan. Team a, B and C cooperate for five days to complete one-third of the total project. Team a has six days off, team B has three days off, and team c works until the end. If team a's work efficiency is twice as fast as team C's, and team C's work efficiency is half of team B's, how many yuan should team a, B and C complete the project on the next day? How many of the simplest fractions (coprime of numerator and denominator) are less than 8 and denominator is 24? Party A and Party B contract a project and get a total salary of 1120 yuan. It is known that Party A has worked for 10 days and Party B has worked for 13 days. It is also known that Party A's salary for four days is 40 yuan more than Party B's salary for five days. How much is the salary for Party B? There are 180 workers in workshop a and 120 workers in workshop B of a factory. Now 50 workers are transferred from the two workshops to support the new factory. Due to the increase of workload, the remaining workers are paid 20% more per person per day. Due to different types of work, the workers in workshop a are paid 6 yuan per person per day, while the workers in workshop B are paid 4.8 yuan per person per day, How many workers are there in workshop a?

For a certain project, if it is contracted by Party A and Party B, it will be completed in two fifths of the day, and the project payment will be 1800 yuan; if it is contracted by Party B and Party C, it will be completed in three fifths of the day, and the project payment will be 1500 yuan; if it is contracted by Party A and Party C, it will be completed in two fifths of the day, and the project payment will be 1600 yuan, And the project payment is the least. Which team should the project be contracted to and how much is the project payment? Team a, B and C contract a project and get a total salary of 21600 yuan. Team a, B and C cooperate for five days to complete one-third of the total project. Team a has six days off, team B has three days off, and team c works until the end. If team a's work efficiency is twice as fast as team C's, and team C's work efficiency is half of team B's, how many yuan should team a, B and C complete the project on the next day? How many of the simplest fractions (coprime of numerator and denominator) are less than 8 and denominator is 24? Party A and Party B contract a project and get a total salary of 1120 yuan. It is known that Party A has worked for 10 days and Party B has worked for 13 days. It is also known that Party A's salary for four days is 40 yuan more than Party B's salary for five days. How much is the salary for Party B? There are 180 workers in workshop a and 120 workers in workshop B of a factory. Now 50 workers are transferred from the two workshops to support the new factory. Due to the increase of workload, the remaining workers are paid 20% more per person per day. Due to different types of work, the workers in workshop a are paid 6 yuan per person per day, while the workers in workshop B are paid 4.8 yuan per person per day, How many workers are there in workshop a?

Let a work efficiency be x, B work efficiency be y, C work efficiency be Z, because a work efficiency is twice faster than C team, so we can know x = Z + 2Z = 3Z, and because C team work efficiency is half of B team, so we can know 1 / 2Y = Z, y = 2Z