21.  Studies conducted around the world find the rate of return for each additional year of schooling to be roughly 10%.

22.  To begin with, what is mentioned roughly in the short recommendation that by limiting the number of rentals, the town council will attain the 50 percent annual reduction in moped accidents has no precise mathematical date or formula to support.

23.  Furthermore, the success limitation of mopeds' rented on the neighboring island of Seaville is so roughly referred to that few councilors will tend to pay attention to, not to say to believe it.

24.  In secondary school, because boys are more likely to continue their schooling, there are roughly eight girls for every 10 boys in India, Nigeria, Pakistan and Turkey.

25.  I divided the reasons into three groups roughly.

26.  Those thoughts can be roughly divided into two parts.

27.  Though it's hard to pin down what exactly a hippy looks, we can roughly define it a style that pursues freedom and restrainment in clothing.

28.  Though it's hard to pin down what exactly a hippy looks, we can roughly define it a style that pursues freedom and entertainment in clothing.

29.  The exploration of Mars has come at a considerable financial cost with roughly two-thirds of all spacecraft destined for Mars failing before completing their missions, with some failing before they even begin.

30.  The exploration of Mars has come at a considerable financial cost with roughly two-thirds of all spacecraft destined for Mars failing before completing their missions, with some failing before they even begin.