SOLUTION: A class of 195 students went on a field trip. They took 7 vehicles, some cars and some buses. Find the number of cars and the number of buses they took if each car holds 5 students

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Question 1174010: A class of 195 students went on a field trip. They took 7 vehicles, some cars and some buses. Find the number of cars and the number of buses they took if each car holds 5 students and each bus holds 45 students.
Answer by ikleyn(52851) About Me  (Show Source):
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x buses and 7-x cars.


The total passengers equation


    45x + 5*(7-x) = 195    students, in all.


The solution is  x = %28195-5%2A7%29%2F%2845-5%29 = 160%2F40 = 4.


ANSWER.  4 buses and 7-4 = 3 cars.

Solved.