Question 768088
x = number of cars taken
9 - x = number of buses taken {they took 9 total vehicles}


5x + 45(9 - x) = 205 {number of vehicles times number of people per vehicle equals total people}
5x + 405 - 45x = 205 {used distributive property}
-40x + 405 = 205 {combined like terms}
-40x = -200 {subtracted 405 from each side}
x = 5 cars {divided each side by -40}
9 - x = 4 buses {substituted 5, in for x, into 9 - x}


They took 5 cars and 4 buses.
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