Eli he rode his bike 1 1/10 miles, until he forgot his book so he went back which is another 1 1/10 miles. 1 1/10 x 2 = 2 1/5. Then, he left his house again and rode his bike 3 3/4 miles. The question is basically asking for the amount of miles it took him to get to the library so you would have to add 3 3/4 and 2 1/5 which equals 5 19/20. Hope this helps!!