I am having problems with this example, not sure how I would go about this without using a calculator.
All 300 Year 11 pupils in a school took GCSE English. The number of pupils gaining grade CHow many more pupils gained grade C or above in the actual exam than in the mock exam?
or above increased from 85% in the mock exam to 93% in the actual exam.
Are you really saying you do not know how to find a percentage of a number?
I asked "what is 85% of 300". That is: 0.85*300= 255.
I asked "what is 93% of 300". That is: 0.93*300= 279
Since 255 students got a "C" or better the first time and 279 got a "C" or better the second time, they improved by 279-255= 24 students.
Of course, Wilmer's method works too. But I think this is a little more direct.
I am revising for a exam which I have to do as part of my course, you can take as many times. I am not trying to do a home work or anything like that, the exam has 16 questions and they are all mental articmatic questions. you have 54 secs to complete the question.
Without using a calculator, I find this hard however i am revising and trying to find the best methods to answer the questions quickly.
Having problems with these types of questions
for example say in a class of 30, 40% achieved half marks or above. How many people have gained less then half marks
Okey so we have 40% and 30 students
60% have gained less then half marks
we can make this 3/5 and then divide 30 by 5 to make it 6 and then * 6 by 3
Is this right?
please let me know?