Waec Model Questions Vol1 2021 Government Question 49

Country Z uses a mixed‑member proportional electoral system. The parliament has 120 seats: 80 constituency seats elected by first‑past‑the‑post and 40 list seats allocated to make each party's total seat share approximate its share of the party‑list vote. Only parties receiving at least 5 % of the list vote qualify for list seats. The parties obtain the following results: - Party X: 30 constituency seats, 35 % of the list vote. - Party Y: 20 constituency seats, 25 % of the list vote. - Party Z: 30 constituency seats, 40 % of the list vote. Using the simple proportional formula \(\text{Target seats}=\text{round}(\text{list‑vote %}\times120)\) and allocating list seats as \(\text{Target seats} - \text{constituency seats}\) (if negative, set to 0), how many total seats does Party X obtain?