Please help me solve this probability question

A plastic bottle manufacturer has three plants, one in the eastern Malaysia, one in the western Malaysia, and one in lndonesia. Production records show that the Malaysia plants each produced 100,000 plastic bottles last month, while the indonesia plant produced 80.000 plastic bottles. Of all the plastic bottles manufactured in lndonesia last month, 4% has a defect that caused the plastic bottles to crack prematurely. Records kept at the Malaysia plants show that 3% of the plastic bottles manufactured in the eastern Malaysia and 6% of the plastic bottles manufactured in the western Malaysia had this defect as well. a. What proportion of the plastic bottles manufactured last month were defective? b. What is the probability that a plastic bottle is defective and was manufactured in Indonesia? c. Given that a plastic bottle is defective, what is the probability that it was manufactured in the Malaysia