Final answer:
The total duration of Ruben's trip around Europe was 87 days, calculated by summing the days spent in each country.
Step-by-step explanation:
Calculating the total length of Ruben's trip to Europe involves basic addition of the number of days spent in each country. To find the total, you add 32 days in England, 27 days in Sweden, and 28 days in Spain.
The total length of the trip is calculated as follows:
32 days (England) + 27 days (Sweden) + 28 days (Spain) = 87 days
Therefore, the total duration of Ruben's trip was 87 days.