She spent the same each day. Subtract what she had in one day from what she had the previous day. That tells you how much she spent that day. She spent the same every day.
For example, do day 4 minus day 5: 210 - 175 = 35 She spent 35 euros each day.
If at the end of the first day she had 315 euros, then she started with 35 euros more than she ended. 315 euros + 35 euros = 350 euros
