1. At noon, the temperature(in 。C) in a certain place was 4。C. From that time on, the change in temperature for every two consecutive hours was recorded. The results (in 。C) were:
+1+3,+2,0,-1,-2,-3,-3 and -5.
(a)What was the temperature at 5:00 pm?
(b)What was the temperature at 8:00 pm?
(c)What was the highest temperture between 12 noon and 9:00 pm?
(d)What was the lowest temperture between 12 noon and 9:00 pm?
2.The number of hours John spends on studying is normally three tims that of Simon. This week, each of them spends an additional 6 hours on studying. As a result, the number of hours John spends on studying is twice that of Simon.How many hours in this week does John spend on studying?How many hours in this week does Simon spend on studying?
更新1:
第二題唔洗答呀....快...仲有2日炸
更新2:
點解冇人答架
