靠，贴不上来。俺直接写吧：

 

Mr. Shea saved $2500 in April. HIs monthy salary is twice the amount he saved in April. In May, he saved a certain amount of money. He spent $4200 more than the amount he saved. 

How much did he saved in May???

所有跟帖： 

• 四月挣了五千，存一半用一半。如果五月工资不变，仍然挣了五千 -kkmem- ♀ (133 bytes) () 11/04/2019 postreply 16:07:16

• (2*2500-4200)/2 -12度圆缺- ♂ (0 bytes) () 11/04/2019 postreply 17:34:37

• 不懂，为啥除2 ？ -南侠- ♂ (0 bytes) () 11/04/2019 postreply 18:21:56

• 不用方程的话，算术解法：2500*2/2-4200/2=400。这和AI有什么关系？ -sfbayparent- ♂ (0 bytes) () 11/07/2019 postreply 00:26:22