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在一般情况下,平均速度与平均工效问题都和典型应用题中的平均问题一样,它们的数量关系和解题思路都是相同的,如下图所示。例1 某人从甲地出发,步行每小时10里,经过8小时到车站乘汽车,车速每小时50里,又过2小时到达乙地,求这个人从甲地到乙地的平均速度。由总距离+总时间=平均速度,得(10×3+50×2)+(3+2)=26(里/小时)例2 甲乙两个生产队合修一条水渠,甲队每天修15丈,修了5天;乙队每天修24丈,修了4天,平均每天修多少?
In general, the average speed and average efficiency problems are the same as the average problems in the typical application problem. Their relationship is the same as that of solving problems, as shown in the following figure. Example 1 A person starting from a, walk 10 hours per hour, after 8 hours to the station by car, speed 50 hours per hour, another 2 hours to reach B, to find this person from A to B of the average speed. The total distance + total time = average speed, (10 × 3 +50 × 2) + (3 +2) = 26 (in / hour) Example 2 A two production teams to repair a canal, team A repair 15 Zhang, repair for 5 days; Team B repair 24 feet a day, for 4 days, how much the average daily repair?