Maths 2Questions...急!!!T.T聽日交!

[匿名]

2009-09-23 3:23 am

數學2問題...
1. This morning Peter's father set an alarm in his watch to remind him taking medicine after exactly 6.5 hours. If the alarm tings at 2:00 p.m. , find the time when Peter's father set the alarm.
請全條回答.
2.A test paper with maximum mark 100 has 8 questions carrying equal marks. For every wrong answer and blank answer the student will lose 15 marks and 5 marks respectively. Find the total mark of a student who has given 5 correct answers, 2 wrong answers and 1 blank answer.
請全條回答.
thxs...
快!!!!!!!

回答 (1)

用戶2053

2009-09-23 4:10 am

✔ 最佳答案

1) 2:00pm - 6.5hours
= 12:00am - 4.5hours
= 8:00am - 0.5hours
= 7:30am
2) Any queation carry 100/8 = 12.5 marks ,
Total mark = 5 * 12.5 - 2 * 15 - 1 * 5 = 27.5

👍 0 👎 0