Add them up and divide by 4 and it says round up. your answer is B
<u><em>Density= Mass divided by Volume</em></u>, but you're trying to find Volume so you apply Algebra and get <u><em>Volume= Mass divided by Volume.</em></u>
Volume= 0.5592841163 [kg/m (power to the 3)]
You should round it up
X should equal to 17 but i dont see what ben did...
X=number of students
9x+12x=630
21x=630
x=30
so for high school, a, the 9 vans carried (9*30) 270 students while the 12 buses carried (12*30)=360 students. check:270+360=630
so for high school,b.
1x+6x=252
7x=252
x=<span>36
so the 1 van carries 36 students and the 6 buses carries (6*36) 216 students. check: 216+36=252</span>
