Choose one of the given percents to estimate the required area or solve the problem posed. Do not calculate exact amounts.

1.	The shaded region:
2.	The shaded region:
3.	The unshaded region:
4.	The shaded region:
5.	Twelve of 22 students in a class are girls. What percent of the students are girls?
6.	What percent of 62 is 46?
7.	Three of the 297 students were state winners. What percent of the students were state winners?