Turn on thread page Beta
    • Thread Starter
    Offline

    7
    ReputationRep:
    Q. In a competition a prize is won every 2014 seconds.
    ESTIMATE number of prizes won in 24 hours.

    The exact value of the answer is 42.899970209 prizes
    The mark scheme ( not official but done by maths genie ) shows that the answer should be 36.

    My working out

    2014 seconds = 2000 seconds ( 1 sig fig )
    2000/60 = Number of minutes.
    2000/60 = 33. 333333 ..... mins
    There fore = 30 mins (1 sig fig )
    1 prize per 30 mins
    there fore 48 Prizes in 24 hours.

    Would my answer be acceptable , it is more closer to the real answer than the one provided by maths genie.
    Offline

    18
    ReputationRep:
    (Original post by AverageHuman)
    Q. In a competition a prize is won every 2014 seconds.
    ESTIMATE number of prizes won in 24 hours.

    The exact value of the answer is 42.899970209 prizes
    The mark scheme ( not official but done by maths genie ) shows that the answer should be 36.

    My working out

    2014 seconds = 2000 seconds ( 1 sig fig )
    2000/60 = Number of minutes.
    2000/60 = 33. 333333 ..... mins
    There fore = 30 mins (1 sig fig )
    1 prize per 30 mins
    there fore 48 Prizes in 24 hours.

    Would my answer be acceptable , it is more closer to the real answer than the one provided by maths genie.
    I would say that’s right
    Posted on the TSR App. Download from Apple or Google Play
    Offline

    21
    ReputationRep:
    (Original post by AverageHuman)
    Q. In a competition a prize is won every 2014 seconds.
    ESTIMATE number of prizes won in 24 hours.

    The exact value of the answer is 42.899970209 prizes
    The mark scheme ( not official but done by maths genie ) shows that the answer should be 36.

    My working out

    2014 seconds = 2000 seconds ( 1 sig fig )
    2000/60 = Number of minutes.
    2000/60 = 33. 333333 ..... mins
    There fore = 30 mins (1 sig fig )
    1 prize per 30 mins
    there fore 48 Prizes in 24 hours.

    Would my answer be acceptable , it is more closer to the real answer than the one provided by maths genie.
    The official mark scheme accepts any answer 35-50 with correct arithmetic methods and some appropriate rounding.
    Your answer would gain full marks.
    Typically though for estimations EDEXCEL expects you to round your numbers to one significant figure and then do the calculation, they usually design the numbers so that the calculation is then very easy. It's amazing that people are happy to round most things but feel really uncomfortable rounding 24 hours to 20.
    (20 X 60 X 60) divided by 2000 is a very easy calculation that leads to 36
    (24 X 60 X 60) divided by 2000 is a bit harder.
    Posted on the TSR App. Download from Apple or Google Play
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: March 2, 2018
Poll
Cats or dogs?
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

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