Neco 2020 Christian Religious Studies Question 50

The early Christian community in Antioch in AD\,45 consisted of \(150\) members, of whom \(50\) were Gentiles and \(100\) were Jews. After the Council of Jerusalem, 10\% of the Gentile members adopted circumcision, while the remaining Gentile members adopted both of the other obligations (abstaining from food offered to idols and sexual immorality), thereby observing exactly two obligations. Additionally, 5\% of the Jewish members voluntarily adopted all three obligations. Five years later, 20\% of those who were observing exactly two obligations decided to also adopt circumcision, thus moving to observing all three obligations. How many individuals are now observing exactly two of the three obligations?