Question:
A car park charges $45 for the first 2 hours and $12 for each additional hour.
Find the number of parking hours if the average parking rate is $15.5/h.
Thank you for your help!
Ratio and Rates - Please Help (Urgent)
2007-11-10 5:41 am
回答 (1)
2007-11-10 5:51 am
✔ 最佳答案
Let x be the number of parking hours is the average parking rate is $15.5/h.$15.5x = $45 + ( x - 2 ) $12
$15.5x = $45 + $12x - $24
$15.5x - $12x = $45 - $24
$3.5x = $21
x=6
Therefore, the number of parking hours is 6.
參考: myself
收錄日期: 2021-04-24 08:25:36
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071109000051KK03581