Join TSR now and get all your revision questions answeredSign up now
    • Thread Starter
    Offline

    6
    ReputationRep:
    Hi.
    I'm on the last question on Exercise 7C and I've basically completed the question but I don't understand why the smallest value is chosen in the last stage (Sunday). I thought it would be the largest seeing as you're trying to maximise the income. It's probably something simple I'm missing but any explanation would be great. I've attached my working and the question. Thank you.
    Attached Images
      
    • Study Helper
    Offline

    13
    (Original post by NicCx)
    but I don't understand why the smallest value is chosen in the last stage (Sunday)
    Perhaps I'm being thick, but which value are you refering to? Could you elaborate?
    • Thread Starter
    Offline

    6
    ReputationRep:
    (Original post by ghostwalker)
    Perhaps I'm being thick, but which value are you refering to? Could you elaborate?
    26 is the answer, but I would have chosen 27 as it's the largest value. Sorry!
    • Study Helper
    Offline

    13
    (Original post by NicCx)
    26 is the answer, but I would have chosen 27 as it's the largest value. Sorry!
    I would certainly go with 27, from what you've posted (nicely laid out, by the way).

    Either you've made an arithmetic slip (I'll check in a minute - currently looking at another thread as well), or the book is in error - and all books have some errors in.
    • Thread Starter
    Offline

    6
    ReputationRep:
    (Original post by ghostwalker)
    I would certainly go with 27, from what you've posted (nicely laid out, by the way).

    Either you've made an arithmetic slip (I'll check in a minute - currently looking at another thread as well), or the book is in error - and all books have some errors in.
    Thank you. I checked it on solution bank and the working is the same as mine with 2 26's and a 27 in the last stage and that has also chosen 26. It wouldn't surprise me if the book is in the wrong though, it does have quite a lot of mistakes in. Most are corrected on solution bank however, so I'm not sure.
    • Study Helper
    Offline

    13
    (Original post by NicCx)
    Thank you. I checked it on solution bank and the working is the same as mine with 2 26's and a 27 in the last stage and that has also chosen 26. It wouldn't surprise me if the book is in the wrong though, it does have quite a lot of mistakes in. Most are corrected on solution bank however, so I'm not sure.
    I get the same results for the table.

    I'd put the book's and solution bank's answer down to an aberration.

    Yours is the correct answer - 27.
    • Thread Starter
    Offline

    6
    ReputationRep:
    (Original post by ghostwalker)
    I get the same results for the table.

    I'd put the book's and solution bank's answer down to an aberration.

    Yours is the correct answer - 27.
    Great, thank you!


    Posted from TSR Mobile
 
 
 
Poll
Which web browser do you use?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.