Answer:
b
Step-by-step explanation:
Answer:

Step-by-step explanation:
=> 78% makes:
=> 
<u><em>In simplest form:</em></u>
=>
1. v=0
2. No solution
3. m=0
4. No solution
5. p= -7
6. x=5
7. -12 = - 12
8. x=5
9. 3=3
10. -32= -32
11. x=0
12. No solution
I'm sorry if anything is wrong.
Answer:
5000 students appeared in the examination.
Step-by-step explanation:
We solve this question using Venn probabilities.
I am going to say that:
Event A: Passed in Mathematics
Event B: Passed in English.
5% failed in both subjects
This means that 100 - 5 = 95% pass in at least one, which means that 
80% passed in mathematics 75% passed in english
This means that 
Proportion who passed in both:

Considering the values we have for this problem

3000 of them were passed both subjects how many students appeared in the examination?
3000 is 60% of the total t. So



5000 students appeared in the examination.