Neco Model Questions Vol1 2019 Government Question 2

An elected assembly has 100 seats, of which 60 are constituency seats filled by first‑past‑the‑post and 40 are list seats allocated proportionally using the Sainte‑Laguë method. Four parties contested the election and obtained the following shares of the national vote: Party P1 45 %, Party P2 30 %, Party P3 15 %, Party P4 10 %. All parties passed the 5 % threshold. The constituency results are: P1 won 48 seats, P2 won 5 seats, P3 won 4 seats and P4 won 3 seats. Using the Sainte‑Laguë divisor series (1,3,5,\dots\), allocate the 40 list seats. Then add the list seats to the constituency seats to obtain each party's total number of seats. Finally, determine whether any party has more seats than its proportional entitlement (based on the 100‑seat total) and state the number of over‑hang seats, if any.