In a queue

There are cars and trucks in a queue in front of a toll gate. A truck is three times longer than a car. Calculate how many cars are in front of the car that has just arrived, if there is one truck among them, which is one eighth of the length of the queue in front of the car that has just arrived.

Correct answer:

x =  21

Step-by-step explanation:

n = 3a   L  = x a + n  n = L/8   n = (x a+n)/8  3a = (x a+3a)/8  3=(x+3)/8  x=21  x=121=21  x=21



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You need to know the following knowledge to solve this word math problem:

algebrabasic functionsnumbersUnits of physical quantitiesGrade of the word problem

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