这道数学题怎么做啊?麻烦翻译一下,然后写下算式~~拜托了!

问题描述:

这道数学题怎么做啊?麻烦翻译一下,然后写下算式~~拜托了!
Dawn and Nancy helped their father,a fruit seller,to sort two baskets of oranges.Dawn's basket contained 3 times as many oranges as Nancy's basket.After Dawn threw away 186rotton oranges and Nancy therw away 28 rotten oranges,they have the same number of oranges.How many oranges were there in each girl's basket at first?

D=3ND-186=N-28D=237 N=79PS:D is Dawn,N is Nancy.意思大概是俩小女孩帮他爸整理橘子,一人一个篮子,开始时D的篮子里数量是N的三倍,当D扔掉186个烂橘子,而N扔掉28个后,两人的数量是一样多的.问开始时他们各有多少个...