UPSC NDA 2 2022 Mathematics Solved Paper

The completion of a construction job may be delayed due to strike. The probability of strike is 0⋅6. The probability that the construction job gets completed on time if there is no strike. is 0.85 and the probability that the construction job gets completed on time if there is a strike is 0.35. What is the probability that the construction job will not be completed on time ?