20 12 essential mathematics examination paper for primary school graduation. Seven. Chongqing Examination Paper 20 1 1 Selected National Primary School Graduation Examination Paper V. Application Question 6. Because the proportion of parts manufactured by Party A and Party B is 3/5, that is to say, the proportion of parts manufactured by Party A and Party B per hour is 3/5. The number of parts manufactured by Party B per hour is112 (ergonomics of Party B). By the end of the cooperation of these parts, Otsuichi * * * has made: 3+5=8 5÷8 =5/8 (the total workload of Party B). Because their cooperation time is the same, and they know the amount (number) that A does per hour, so: 5/8 ÷112 = 7.5 (hours) 7.5x 18= 135 (pieces), and A * is found. Mainly grasp the cooperation time unchanged, know another person's score (work efficiency) and total score, you can find out their * * * and cooperation time (two people do the same time), you can also find out the first person (that is, a specific amount of people) * * *, and then find out the total workload of A according to the total workload = work efficiency x working time.

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