I have some problems with solving these questions.
1. At the entrance of Paradiso Hotel, a shuttle bus comes in every 15 minutes and it waits 3 minutes at the bus stop. If a guest of the hotel does not know the timetable of the shuttle bus service, find the probability that he can get on the bus without waiting.
2.Every day Betty goes to Cafe One for tea from 3:30 pm to 3:45 pm. Today Charles will have a tea at Cafe One for 10 minutes. If Charles will enter Cafe One at any time from 3:00pm to 4:00pm, what is the probabillity that he will meet Betty there?
Please answer these questions with detailed explanation.
Thank you!
Maths problem(F.3 probability)
2009-12-18 3:03 am
回答 (2)
2009-12-18 3:46 am
✔ 最佳答案
/=divide *=times \=分線=over1.3/18*100%=16.666666666666666666(infinity 6),I labled 18 mins as an interval their is three mins that you can take the bus immediately,then we will use the about stagedy.
2.25/60=5\12 Charles will enter Cafe One at any time within 3:00-4:00,then if Charles enter Cafe One at 3:20 to 3:45,he will met Betty,so 25/60=5/12.
I HOPE THIS WILL HELP YOU!
2009-12-17 19:50:04 補充：
SORRY, I made a mistake at line1 and line 4.line one should be /=divide *=times \=分線=over.And line 4 should be 2.25/60=5\12etc.
2009-12-25 16:40:15 補充：
OK THEN 3/15=0.2
參考: 自己, ME TOO
2009-12-18 4:58 am
(1) Should be 3/15 = 0.2
The 15 minutes cover the 3 minutes.
The 15 minutes cover the 3 minutes.
收錄日期: 2021-04-13 16:59:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091217000051KK01187