# Further maths

In an examination 31 candidate passed Chemistry,29 passed Physics 3 failed both subjects.lf 50 candidates sat for the examination how many of them passed Chemistry only.

1. 👍 6
2. 👎 1
3. 👁 1,721
1. Let x be the number who passed both.
x + 31-x + 29-x + 3 = 50
-x = -13
x = 13

number who passed Chemistry only = 31-x
= 31-13 = 18

1. 👍 10
2. 👎 0
2. not the same with the answer at the back of the textbook

1. 👍 4
2. 👎 4
3. Correct

1. 👍 3
2. 👎 0
4. 👍

1. 👍 2
2. 👎 0
5. 👍👍👍👍

1. 👍 2
2. 👎 0
6. Using Venn diagram to solve it

1. 👍 1
2. 👎 0
7. My was 13 students failed both subjects but the formula helped me out and I got 23

1. 👍 0
2. 👎 1
8. Pls explain i dont understand and the answer differs from that at the back of tge textbook

1. 👍 0
2. 👎 0

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