In certain college ,25% of students failed mathematics, 15% of students failed chemistry and 10% of students failed both mathematics and chemistry. A student is selected at random.
1)if he failed chemistry, what is the probability that he failed mathematics ?

2)if he failed mathematics, what is the probability that he failed chemistry?

Question

In  certain  college ,25%  of students  failed  mathematics, 15%  of  students  failed  chemistry   and  10%  of  students   failed     both   mathematics  and   chemistry. A  student   is  selected  at random. 
1)if    he    failed    chemistry, what  is  the   probability     that     he    failed     mathematics ?

2)if   he    failed    mathematics,     what    is   the    probability     that   he    failed    chemistry?

isaactiparo · Answer

i  need  you  help plz??

3redsons · Answer

I made this chart for you, it tells you how to figure out question 1, and the way it teachs you is the same way you do question 2

3redsons · Answer

if this doesn't make sense ill explain it better