Turn on thread page Beta
    • Thread Starter
    Offline

    9
    ReputationRep:
    240 students did a test the pie chart shows their grades e.g
    D - 180*
    E- 90 *
    C - 30*
    F- 60 *

    question:
    how many students get grade C?

    Help please.
    • Section Leader
    • Very Important Poster
    • Peer Support Volunteers
    Offline

    21
    ReputationRep:
    Section Leader
    Very Important Poster
    Peer Support Volunteers
    (Original post by Noorals)
    240 students did a test the pie chart shows their grades e.g
    D - 180*
    E- 90 *
    C - 30*
    F- 60 *

    question:
    how many students get grade C?

    Help please.
    there are 360 degrees in a circle, grade c makes up 30 degrees of this. So as a fraction that is 30/360 which equals 0.08333 or 8.33%. 8.33% of 240 students is 20 students at grade c
    • Thread Starter
    Offline

    9
    ReputationRep:
    (Original post by claireestelle)
    there are 360 degrees in a circle, grade c makes up 30 degrees of this. So as a fraction that is 30/360 which equals 0.08333 or 8.33%. 8.33% of 240 students is 20 students at grade c
    Thanks
    Offline

    22
    ReputationRep:
    (Original post by claireestelle)
    ...
    You could have just done \frac{30}{360} \times 240 = 20 instead of decimals and percentages. Just wanted to let you know that full solutions are against forum guidelines, cat's out of the bag now but just so you know for next time.
    • Section Leader
    • Very Important Poster
    • Peer Support Volunteers
    Offline

    21
    ReputationRep:
    Section Leader
    Very Important Poster
    Peer Support Volunteers
    (Original post by Zacken)
    You could have just done \frac{30}{360} \times 240 = 20 instead of decimals and percentages. Just wanted to let you know that full solutions are against forum guidelines, cat's out of the bag now but just so you know for next time.
    Sorry, I don't post in study help often so I forgot You're right I did go about that awfully long winded way.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: April 4, 2016

2,572

students online now

800,000+

Exam discussions

Find your exam discussion here

Poll
Should predicted grades be removed from the uni application process
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.