find the number of cars and the number of buses they took if each car holds 4 students and each bus hold 55 students.

Question

a class of 197 students went on a field trip. they took 11 vehicles, some cars and some buses. Find the number of cars and the number of buses they took if each car holds 4 students and each bus hold 55 students.

Answer 1

c = # cars, b = # buses

 

4c  + 55b = 197

c + b = 11

 

solve this system. Hint: use substitution.

Answer 2

SUBMITTED TWICE IN A ROW. ANSWER will be elsewhere.