Question 2210
Time it takes to travel to Boston is 2 3/4 hours = 11/4 hours

You have travelled 1/11 of the way = 1/11 * 11/4 = 1/4 hours

Remaining hours to travel is 11/4 - 1/4 = 10/4 = 2 2/4 = 2 1/2 hours


There is a mistake in question 2