Answered

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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

Sagot :

meylinkalsaleh
x=cars
y=buses
x+y=7 vehicles
 5x+45y= 195 students
 -5x-5y=-35
 +5x+45y=195
------------
40y=160
 --- ---
40 40
y=4
x+4=7
x=3
They took 4 buses and 3 cars 
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