A.T.S. wants to offer a workshop in database management to interested employees at Blackboard Pathology. A.T.S. will offer the course to 30 persons at a charge of $50 each. Moreover, A.T.S. will agree to reduce the charge for everybody by $1.00 for each person over the 30 who attends, up to a total group size of 50. It has been determined that the greatest revenue the A.T.S. can receive is $1600. What group size will give this revenue?
A) 34B) 36C) 40D) 44E) 48
MATHS HELP~~
2007-12-09 5:16 am
回答 (1)
2007-12-09 5:43 am
✔ 最佳答案
Let the size is x (larger than 30) Then we have the following information of the course
person:x
charge:50-(x-30)=80-x
revenue:1600
So x(80-x)=1600
x^2-80x+1600=0
(x-40)^2=0
x=40
The group size is 40
收錄日期: 2021-04-28 14:17:29
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071208000051KK04069