Question

In a class of 60 students,the number of students who passed biology is 6 more than the number who passed chemistry.Every student passed at least one of the two subjects and 8 students passed both subjects.How many students passed biology and chemistry.

Answer 1

Draw your Venn diagram. You can see that if x students passed chemistry, then
x + x+6 - 8 = 60

Answer 2

Let 'u' be total students in the school, n(u)=60.
Let 'B' be number of biology, n(B)=?
Let 'C' be number of Chemistry,n(C)=?
Let n(B n C)=8.
Let 'x' be those who sturdy chemistry only
✓sketch the Venn diagram and show all the information in it.
That is:
Write n(B)=? On top of first set
Write n(C)=? On top of second set
Write '6' in the first set
Write 'x' in the second set
Write '8' as intersection
>Now add all the three regions and equate to the union.i.e
(6 + 8 + x)=60
14 + x =60
X=46
i. Number of biology= (6+8)=14
ii.Number of Chemistry=(8+x)=(8+46)=56
iii.Number of those who sturdy only one game=(6+x)=but x=46, so we have (6+46)=52.
Let prove if we have our answers correct
NB: Addition of the three regions should be equal to the union.
We have (6+8+x)=60, but x= 46,so we have (6+8+46)=60
60=60✓✓✓✓✓✓✓✓✓✓✓✓is correct

Answer 3

I hate your answer 😠😤

Answer 4

I like the way the answer was presented and it made me understand it very easily

Answer 5

It's cool I understand it very well.That is Fantastic.Bravo😀🤗🤩😁😜😛😇😺👩‍🏫

Answer 6

It's cool Fantastic

Answer 7

I love your presentation, wonderful

Answer 8

Yes

Answer 9

Please number of chemistry= (8+x)=(8+46)=56
I think is 54 but not 56

Answer 10

Awesome thanks buddy but I don't think I can do it for now

Answer 11

Why didn't you draw the Venn diagram

Answer 12

💘❤️💓💔💕💖💗💙💚💛🧡💜🖤💝💞💙💟❣️I love your presentation

Answer 13

Thanks

Answer 14

Why chemistry is even more higher than biology

Answer 15

Let U = number of students in the class. =60
Let B = students who passed Biology. = ?
Let C = students who passed Chemistry.
Let B n C = 8
Let C = Any English alphabet, say x.
Then biology will be x + 6 since students who passed Biology is 6 more than the number who passed Chemistry.
Therefore (x +6) - 8 + 8 + x - 8 = 60
2x - 2 = 60
2x = 62
x = 31
Now, only Biology is (x + 6) - 8 =29, x = 31
Only Chemistry is (x - 8) = 23, since x is 31
B + B n C + C = U
29 + 8 + 23 = 60

Answer 16

Please are you sure that your answer is correct and complete

Answer 17

Pls I think it is 54

Answer 18

Although the first is superb but I prefer the second one.
Because the first one addition of the numbers sum up to 54 not 56 and I think it’s a mistake there.
Thank you very much

Answer 19

I prefer the second one,since that is what I was taught and I had the same answer but I think there is a mistake in the first one.👍👌🤗💯💓

Answer 20

What about students passed only one subjects

Answer 21

The last time I wrote this answer l got it wrong because I wrote the answer to biology and science at the top of the circles

Answer 22

I like all but I prefer the first one

Answer 23

The same answer

Answer 24

I prefer the second one because the first the chemistry is more than the biology but the question states that the biology is 6 more than the chemistry.

Answer 25

Correct