求该GAMT数学题的快速解题技巧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 ta

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求该GAMT数学题的快速解题技巧Runningattheirrespectiveconstantrates,machineXtakes2dayslongertoproducewwidgetsthanm

求该GAMT数学题的快速解题技巧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 ta
求该GAMT数学题的快速解题技巧
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.4
B.6
C.8
D.10
E.12
如果假设machineX Y的工作效率为x y 的话,或者求他们做一个W所需的天数的话,都可以求得解.但是列方式,解方程都很花时间,

求该GAMT数学题的快速解题技巧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 ta
通过X和Y一共生产5/4用3天,X比Y慢2天每W,很容易看出来这三天X生产了2/4,Y生产了3/4,2W也就是4个2/4W,也就是4个3天,那就是12天
这就是你要的抛弃Y直接看X的思路?

可以随便设一个w 因为只是参数不影响结果所以我设w=1 由题意可以得x+y=5/12 y-x=2xy 然后相对容易可以算出xy=1/24 这样的话x解出=1/6
呵呵祝你成功

求该GAMT数学题的快速解题技巧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 ta 行测数学题解题技巧求二次函数的应用题解题技巧. 高中化学的解题技巧求高中数学排列组合解题技巧初三电功率有什么解题技巧啊?特别是思路,怎样才能快速的解决电功率的题目? 如何快速掌握高一数学的解题思路与解题技巧?拜托各位了 3Q我以前数学就学的不太好,现在数学很多题都没有解题思路,急求解决方法! 求：英语四级快速阅读的做题技巧高一化学浓度的解题技巧? GAMT是什么?考国内的mba还用考GAMT吗? 数学题（技巧是巧用旋转变换解题）P是正方形内一点,PA=1,PB=2,PC=3,求∠APB的度数求：初中语文阅读理解解题技巧? 高一集合的解题技巧奥数的行程问题解题技巧锋面气旋的形成及解题技巧关于二次函数图象的解题技巧初中数学三角形的解题技巧盐类水解的问题解题技巧