PSLE
A player has to play a total of five games in Round 2 of a competition. The scores for Rael's first four games are shown. Rael will qualify for Round 3 if his average score for four of the five games is 80 or more. What is the lowest score Rael must get in the 5^th game to qualify for Round 3?

Round 2
Game	Score
1st	75
2nd	77
3rd	73
4th	79
5th	?

Lowest total score for four games to qualify
= 4 x 80
= 320

To get the lowest score in the fifth game to qualify for Round 3, we need to exclude the lowest score (73) at the 3rd game in Round 2 so that the rest of the four games can be as high as possible to qualify for Round 3.

Hence, the 1st, the 2nd, the 4th, and the 5th games must score a total of 320.

Score in the 5th game
= 320 - 75 - 77 - 79
= 89

Answer(s): 89