# A class of 449 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 3 students and each bus...

A class of 449 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 3 students and each bus holds 55 students.

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Expert Answers

Student Comments

oldnick | Student

Let B= number of Bus and C= number of Cars.

B + C = 11

(Sum number of vehicles)

55B + 3C =449

(People per cars and bus are number of student on trip.)

Multiplying by 55 the first equation we get:

55B + 55C = 605

Subtract the second equation from this:

52C =156 that shows c=3

therfore: B = 11 - 3 = 8

Fact checking: 8 x 55 + 3 x3 = 449