To solve this problem, let's set up equations based on the given information:
Let x be the amount the first student contributes.
The second student contributes 700 euros less than the first, so their contribution is x - 700.
The third student contributes 800 euros less than the third, so their contribution is x - 800.
Since the total amount contributed by all three students is 9000 euros, we can write the equation:
x + (x - 700) + (x - 800) = 9000
Now, we can solve for x:
3x - 1500 = 9000
3x = 10500
x = 3500
Therefore, the first student contributes 3500 euros, the second student contributes 2800 euros (3500 - 700), and the third student contributes 2700 euros (3500 - 800).
