GRE Quantitative

咁大個人仲要做 d 咁 ge 數，我覺得好侮辱。但係又唔代表一定會全部 correct 喎。

e.g. Three times the first of three consecutive odd integers is three more than twice the third. What is the second of the three consecutive odd integers?

中哂 d 蕉皮。超無奈。

And this one:

Jay and his brother own a joanitorial service. Jay can do a cleaning job alone in 5 hours and Ray can do the same job in 4 hours. How long will it take them to do the cleaning job together?

豈不聞人多手腳亂？又或者有事半功倍？