For an 8th-grade class trip to the museum, the school has buses that can transport 30 students each and vans that can transport 10 students each. There are 190 students in the 8th grade. ation to represent how the students can be transported to the museum Labels: x= y =

Write an equation in standard form

How many vans does the 8th grade need, if they take 4 buses

3v +  c = 22  ---> c = 22 - 3v  

2v + 4c = 28 ---> 2v + 4(22 - 3v) = 28  

                         2v + 88 - 12v = 28

                       -10v + 88 = 28  

                               - 88  - 88  

                        - 10v = - 60  

                              v = 6 students

Step-by-step explanation:

7 vans.        

Step-by-step explanation:

4*30=120    190-120=70  70/10=7

7 vans

v=7