Running at their respective constant rates,machine X takes 2

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/11/08 06:48:20

Running at their respective constant rates,machine X takes 2 days longer to produce w widgets than machine Y.At these rates,if the two machines together produce 5/4 w widgets in 3 days,how many days would it take machine X alone to produce 2w widgets?
A.\x054
B.\x056
C.\x058
D.\x0510
E.\x0512

设x用了x天做w个 y用了x-2天则x一天做w\x,y一天w\（x-2）
3天x,y一起做了
3（w\x+w\（x-2））=5\4w
解方程约掉w
12\x+12\（x-2）=5
化为整式方程得到（5x-4）（x-6）=0
x1=0.8 x2=6
检验两个都符合原方程但是x1不符合实际
所以x为6
所以x做2w用12天选e
求采纳爪机打字不容易

Running at their respective constant rates,machine X takes 2 英语翻译including its respective affiliates and their respective running machine的意思? Most hotels lower their rates on the running machine是什么意思? 英语翻译The format keys possible and their respective meanings a constant 根据首写字母填空：At half past their aunt takes Dick into the kitchen 懂英语的来,各自安好的英文到底是 The respective 还是 Their well a washing machine 和running water的中文意思 You can't leave the workshop ____the machine is running. I'm learning the ____ of running the machine.