Which points are coplanar and noncollinear?

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

50 points~ ! i have to turn this in tomarrow

In a timed typing test lara typed 63 words per minute. estimate the number of words she should be able to type in half in hour show your work