Math Problem Statement

there are cars and trucks in a queue on a motorway. a truck takes up 18 meters more space than a car. in the left lane there are 16 trucks and 210 cars. in the right lane there is 1 truck and 270 cars. how much space does it take? a) a truck b) a passenger car c) total

Solution

Let's break down the problem and assign variables to represent the unknowns:

Let:

  • xx be the space (in meters) occupied by a passenger car.
  • x+18x + 18 be the space (in meters) occupied by a truck (since a truck takes up 18 meters more space than a car).

Now, let's calculate the total space occupied by the vehicles in both lanes.

Left Lane:

  • 16 trucks: The total space taken by the trucks in the left lane is 16×(x+18)16 \times (x + 18).
  • 210 cars: The total space taken by the cars in the left lane is 210×x210 \times x.

The total space in the left lane is: 16(x+18)+210x16(x + 18) + 210x

Right Lane:

  • 1 truck: The total space taken by the truck in the right lane is 1×(x+18)1 \times (x + 18).
  • 270 cars: The total space taken by the cars in the right lane is 270×x270 \times x.

The total space in the right lane is: 1(x+18)+270x1(x + 18) + 270x

Total Space:

The total space taken by all vehicles in both lanes is the sum of the total space in the left and right lanes: [ \text{Total Space} = \left[ 16(x + 18) + 210x \right] + \left[ 1(x + 18) + 270x \right] ]

Let's simplify this expression:

Total Space=16(x+18)+210x+1(x+18)+270x\text{Total Space} = 16(x + 18) + 210x + 1(x + 18) + 270x =16x+288+210x+x+18+270x= 16x + 288 + 210x + x + 18 + 270x =(16x+210x+x+270x)+(288+18)= (16x + 210x + x + 270x) + (288 + 18) =497x+306= 497x + 306

This is the total space in meters.

We now need to solve for xx, the space occupied by a car. To do this, we would need additional information, like the total space occupied by the vehicles in both lanes. Without that information, we can express the total space in terms of xx.


To summarize the answer:

  • a) The space a truck takes is x+18x + 18 meters.
  • b) The space a passenger car takes is xx meters.
  • c) The total space occupied is 497x+306497x + 306 meters, but we need more information to solve for xx directly.

Would you like me to proceed with additional details or assumptions? Let me know if you have any specific numbers for the total space, or if you'd like me to clarify any part!

Here are some related questions:

  1. How would you calculate the total space if we had the total space occupied by vehicles?
  2. What would happen if we had more trucks in the right lane?
  3. How could you express this problem as a system of equations for different values of xx?
  4. What does it mean if the total space from both lanes is not consistent with the truck/car ratio?
  5. How does this type of problem relate to real-world scenarios in transportation planning?

Tip: Try checking if the total space occupied by the vehicles in both lanes is given to solve for xx directly.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Basic Arithmetic

Formulas

Total space = (number of trucks in left lane) * (space per truck) + (number of cars in left lane) * (space per car) + (number of trucks in right lane) * (space per truck) + (number of cars in right lane) * (space per car)

Theorems

Solving for unknown variables using linear expressions

Suitable Grade Level

Grades 7-9