Question

Mr Smith's small mathmetics class had percentage exams marks totalling 280.

If the class exam mean was 40% ,how many students were in his class ?

Answer 1

7 students were there....i think..
total no of students be x
so there total marks is 280
280/ no.of students = mean..
280/x=40
x=7

Answer 2

how did u get 7 ? is that your guess?

Answer 3

no...
280=40x
x=280/40
x=7

Answer 4

so u just divided by the percentage ?

Answer 5

yup....is it correct..??

Answer 6

nop

Answer 7

so what is the correct ans..??

Answer 8

idk, but its definitely not that small

Answer 9

ok..

Answer 10

and also your working is wrong
u divided 280 by 40 = 7 but its not just "40 ", its 280 by 40% = 700

Answer 11

hmm..

Answer 12

40% is exam marks mean..??

Answer 13

yh, class exam mean was 40%

Answer 14

'Mr Smith's small mathematics class'
'small mathematics class'
'small'
Yes it is 7 people
don't be so sceptical about maths answers, again you can have people eating 200 melons a day

Answer 15

@LS1088 can u kindly show me how did u get "7" and if its the same working as @nirmalnema then its wrong

Answer 16

u guys are saying that 280 divided by 40 = 7
BUT its not just 40 its 40%

Answer 17

no its not wrong
40% marks out of 100 = 40 so my working is correct//

Answer 18

it is the same working, by mean of 40% I am certain the mean test score is not 0.4 as the total test marks would be 100

Answer 19

x/100 * 100 =40 so x = 40

Answer 20

yup ..@LS1088 is correct. n me too

Answer 21

well, i did out 7 as the answer and its says its wrong

Answer 22

put*

Answer 23

Then is the question here the complete one?

Answer 24

yh it is

Answer 25

it is the only case when u get different ans..when the total no of marks of the paper is not 100

Answer 26

well, idk since it says percentage exam marks totalling was 280

Answer 27

hmm....