Suppose the crew had cleaned Fourth Street on Tuesday afternoon instead of on Tuesday morning, but all other conditio...

Emil-Kunkin on July 26, 2023

E is impossible because if we put 4 in the afternoon, this means there are only two open afternoon slots left on the last two days. Since we know that Betty 2 and 5 are in the afternoon, those two slots must be filled by 2 and 5. This means that both 2 and 5 must be after 7.