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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-> 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 912241: 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 hold 45 students. Answer by MathLover1(20849) (Show Source):
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let's cars be and buses
given: ...eq.1
students went on a field trip
each car holds students and each bus hold students
....eq.2
solve the system:
...eq.1 ....eq.2
___________________________
...eq.1 ...solve for ...substitute in eq.2
....eq.2
...solve for
find
so, the number of cars is and the number of buses is
check:
....eq.2
