math JJ ?3q3q

licheng

8、XX 在royalties上赚了$3million,and 在sale上赚了$20million.之后又在sale上赚了$108million,在royalties上赚了$90million.what's the ratio of royalties to sales declined?
---------
-147%
?
how is it reached?

tongxun

这题在我作出了时，我是觉得挺怪的。
从提议我觉得应该是求比率的比。 （90/108 - 3/20）/（3/20）
欢迎讨论！

brigittew

i just confused with word 'declined',what on earth it modified here?, yes, the question asked the raio of something, but what?

tongxun

等真正碰到此提是小心阅读！这里就当开阔思路吧。