Questão de Química

A sleepy motorist stopped along the road to take a nap. After a while, a jogger knocked on the window and asked for the time. The drowsy man said, “It’s 8 o clock.” He went back to sleep, and then a while later another jogger knocked on the window. “Do you have the time?” The tired man grumbled, “8:30!”He didn’t want it to happen again, so he wrote a note and put it in the window. It read, “I don’t have the time.” A few minutes later, another jogger came by and knocked on the window. “Hey, mister!” the jogger said. “It’s 8:45!” (Harmes and Surguine. Coast to Coast, Longman, 1991)