nes0301
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385 Students go on a field trip. There are 19 vehicles, some vans and some buses.

7 students can fit in a van, and 25 students can fit in a bus.

how many vans and buses were there ?

Respuesta :

mhanifa

Answer:

  • 14 buses and 5 vans

Step-by-step explanation:

Let the number of buses be x and vans be y.

Equations as per given:

  • x + y = 19
  • 25x + 7y = 385

Substitute y and solve for x the second equation:

  • y = 19 - x
  • 25x + 7(19 - x) = 385
  • 25x - 7x + 133 = 385
  • 18x = 385 - 133
  • 18x = 252
  • x = 252/18
  • x = 14

Then finding y:

  • y = 19 - 14 = 5

The answer is 14 buses and 5 vans

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