C, 1,020. There are 67 out of 100 students who do at least 2 hrs of chores a day, or 67%. Converting that to a decimal, you get .68, which you multiply by the number of students at the school to get your answer.
First we would find the area of the entire thing,
A=1/2(base)(height)
so A = 1/2(5)(12) = 30 mm^2
next we find the area of the smaller triangle,
A = 1/2(4)(3) = 6 mm^2
Then we subtract the area of the smaller triangle from the area of the larger one
30-6 = 24 mm^2
12.5 - is 25% of
Solution: 50
