Answer:
A
Step-by-step explanation:
Let R= repaired
H= hardback
We know that
R|H=2/3 (or the odds of a book being repaired given that it was a hardback is 2/3)
the conditional probability formula is as follows:
A|B= (A∩B)/B
let x = A∩B
2/3=x/(7/10)
x=7/15
