Watch
Announcements
#1
There are 60 students studying sciences (biology, chemistry and physics).
10 students study Biology, chemistry and physics.
13 students study biology and chemistry.
19 students study biology and physics.
18 students study chemistry and physics.
41 students study chemistry.
30 students study physics.
0
1 year ago
#2
Are you looking for how to work out how many study only biology?
0
1 year ago
#3
This might be wrong but I think this is how you do it-
Well you already know that 10 people are doing all 3 subjects so they are in the middle.
13 people are doing chemistry and biology but 10 of them are also doing physics so you do 13-10=3 so that's what you put for that bit.
It says that 19 people are doing biology and physics but again as 10 people are also doing chemistry with it, you do 19-10=9 which is what you put in that part.
Again as 18 people are doing chemistry and physics but 10 of them are also doing biology, you do 18-10=8 which you put for that part.
You know that 41 people as a whole are doing chemistry, so you do 10+3+8=21 and then do 41-21=20. This tells you that 20 people are doing only chemistry.
As you know 30 people are doing physics, you do 10+9+8=27 and then 30-27=3 to get 3 people doing only physics.
Then when you add all the numbers together and do 9+3+10+20+8+3=53. As there are 60 students you do 60-53=7 to get the number of people doing just biology and now you have all the figures and you just have to put the numbers in the Venn diagram
0
1 year ago
#4
(Original post by NotWorthKnowing)
This might be wrong but I think this is how you do it-
Well you already know that 10 people are doing all 3 subjects so they are in the middle.
13 people are doing chemistry and biology but 10 of them are also doing physics so you do 13-10=3 so that's what you put for that bit.
It says that 19 people are doing biology and physics but again as 10 people are also doing chemistry with it, you do 19-10=9 which is what you put in that part.
Again as 18 people are doing chemistry and physics but 10 of them are also doing biology, you do 18-10=8 which you put for that part.
You know that 41 people as a whole are doing chemistry, so you do 10+3+8=21 and then do 41-21=20. This tells you that 20 people are doing only chemistry.
As you know 30 people are doing physics, you do 10+9+8=27 and then 30-27=3 to get 3 people doing only physics.
Then when you add all the numbers together and do 9+3+10+20+8+3=53. As there are 60 students you do 60-53=7 to get the number of people doing just biology and now you have all the figures and you just have to put the numbers in the Venn diagram
This is what I made it too
1
1 year ago
#5
(Original post by Hazy-G)
This is what I made it too
phew
I'm glad I didn't do it wrong then
0
#6
(Original post by unknownalienn)
This might be wrong but I think this is how you do it-
Well you already know that 10 people are doing all 3 subjects so they are in the middle.
13 people are doing chemistry and biology but 10 of them are also doing physics so you do 13-10=3 so that's what you put for that bit.
It says that 19 people are doing biology and physics but again as 10 people are also doing chemistry with it, you do 19-10=9 which is what you put in that part.
Again as 18 people are doing chemistry and physics but 10 of them are also doing biology, you do 18-10=8 which you put for that part.
You know that 41 people as a whole are doing chemistry, so you do 10+3+8=21 and then do 41-21=20. This tells you that 20 people are doing only chemistry.
As you know 30 people are doing physics, you do 10+9+8=27 and then 30-27=3 to get 3 people doing only physics.
Then when you add all the numbers together and do 9+3+10+20+8+3=53. As there are 60 students you do 60-53=7 to get the number of people doing just biology and now you have all the figures and you just have to put the numbers in the Venn diagram
Yes, you correct! Thank you!
1
1 year ago
#7
(Original post by RB55555)
Yes, you correct! Thank you!
You’re welcome 😊
0
X

new posts
Back
to top
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### Poll

Join the discussion

#### Do you think receiving Teacher Assessed Grades will impact your future?

I'm worried it will negatively impact me getting into university/college (28)
35.44%
I'm worried that I’m not academically prepared for the next stage in my educational journey (9)
11.39%
I'm worried it will impact my future career (4)
5.06%
I'm worried that my grades will be seen as ‘lesser’ because I didn’t take exams (23)
29.11%
I don’t think that receiving these grades will impact my future (9)
11.39%
I think that receiving these grades will affect me in another way (let us know in the discussion!) (6)
7.59%