It has been 25 days since Sofu first met her friend, Kitto. Kitto had promised to meet her today, but when Sofu called, he said they could only meet on a Wednesday, 10 days from now. On which day of the week did they first meet?

To determine the day of the week when Sofu and Kitto finally met, we need to calculate the total number of days between their initial meeting and the day they were supposed to meet.

Sofu met Kitto 25 days ago. Let's denote this day as Day 1.

Kitto informed Sofu that they would meet after 10 days from today, which is a Wednesday. Let's denote this day as Day 2.

To find the day of the week when they finally met, we need to add the number of days between Day 1 and Day 2 and determine the resulting day of the week.

The number of days between Day 1 and Day 2 is calculated as follows:

25 days + 10 days = 35 days.

Since there are 7 days in a week, we divide 35 by 7 to determine the remainder.

35 days ÷ 7 = 5 weeks with no remainder.

This means that after 5 weeks, the day of the week will remain the same.

Since Day 1 was a Wednesday, and 5 weeks have passed, the day of the week when Sofu and Kitto finally met is also a Wednesday.

Therefore, they met on a Wednesday.