Recent content by TracyThomas

Re: Ann & Betty got rich $$$--But where did the 50 come from? Thanks! I haven't found ANY errors in the Singapore Math textbook answer keys in many years of using the program, but this answer key is written by someone else, I think, so I suppose it could be in error.

I have this problem in my book: Ann had 20(Cash) less than Betty. Ann spent 3/4 of her money, while Betty spent 4/5 of hers. Then Ann's remainder was 5/6 of Betty's remainder. If Ann had x(Cash) originally, form an equation in x and solve it. And this solution in the answer key: x=Ann's...