Transportation 6319

The pupils traveled on the trip by minibus, while the cost per participant was 15 euros. If they occupied the last 4 free seats in the minibus, the cost per participant would be reduced by 3 euros. What was the total cost of minibus transportation?

Correct answer:

x =  240 Eur

Step-by-step explanation:


15 · n = (15-3)·(n+4)
x = 15·n

3n = 48
15n-x = 0

Pivot: Row 1 ↔ Row 2
15n-x = 0
3n = 48

Row 2 - 3/15 · Row 1 → Row 2
15n-x = 0
0.2x = 48


x = 48/0.2 = 240
n = 0+x/15 = 0+240/15 = 16

n = 16
x = 240

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