Waec Model Questions Vol1 2021 Christian Religious Studies Question 42

A church measures its expression of faith through a "Work Score" defined as \[ \text{Work Score}= \frac{\text{total volunteer hours per week}}{\text{total members}}. \] The church requires a Work Score of at least 2.5 hours per member per week. Initially the congregation had 200 members. In that month 60 members each volunteered 3 hours, 30 members each volunteered 5 hours, and the remaining members volunteered none. After an outreach programme the church welcomed 20 new members, of whom 10 volunteered 2 hours each per week. (a) Does the church now meet the required Work Score? (b) If it does not, how many additional volunteer hours must the 20 new members collectively contribute (beyond the 2 hours each) so that the Work Score reaches the required minimum?