Roberto wants to clean up his neighborhood by picking up trash. The total distance around his block is 1 3/4 of a mile. He decides to do this over a two-day period. If he walks 5/8 of a mile on the first day, how far does he need to walk the second day to pick up trash? (1 point)
To find the total distance Roberto needs to walk on the second day, we need to subtract the distance walked on the first day from the total distance around the block.
Total distance around the block = 1 3/4 mile = 7/4 mile
Distance walked on the first day = 5/8 mile
Distance walked on the second day = Total distance around the block - Distance walked on the first day
= 7/4 mile - 5/8 mile
= 14/8 mile - 5/8 mile
= (14-5)/8 mile
= 9/8 mile
Therefore, Roberto needs to walk 9/8 mile on the second day to pick up trash. Answer: \boxed{\frac{9}{8}\text{ mile}}.