Question

The odds in favour of A solving a
problem is 5:7and odds against B
solving the same problem is 9:6.
What is the probability that if both of
them try, the problem will be solved?​

Answer 1

Answer:

13/20. IND.

Step-by-step explanation:

probability that A solve the problem

p(A) = 5/12

probability that B solve the problem

P(B) = 1 - (9/15) = 6/15

probability that the problem will be solved

p(AorB) = p(A) + p(B) - P(A and B)

= 5/12 + 6/15 - (5/12 * 6/15)

= 49/60 - 30/180

= 117/180 = 13/20