After eating a hearty meal they went to see the Buckingham palace. There were 30 paintings in the Buckingham palace. There, Rachel learned that 31 visitors came to the Buckingham palace that day. If there were 16 visitors the previous day How many more visitors visited the Buckingham palace on that day than on the previous day?
There were 15 more visitors who came to the Buckingham Palace on the day that Rachel and her companions went to visit than the day before.