PSLE
A player has to play a total of five games in Round 4 of a competition. The scores for Caden's first four games are shown. Caden will qualify for Round 5 if his average score for four of the five games is 80 or more. What is the lowest score Caden must get in the 5^th game to qualify for Round 5?

Round 4
Game	Score
1st	77
2nd	77
3rd	78
4th	71
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 5, we need to exclude the lowest score (71) at the 4th game in Round 4 so that the rest of the four games can be as high as possible to qualify for Round 5.

Hence, the 1st, the 2nd and the 3rd games must score a total of 320.

Score in the 5th game
= 320 - 77 - 77 - 78
= 88

Answer(s): 88