Decathlons On

WIK

-10 events

-you need to score at least 75 out of 100 points in order to advance

-First 5 events- average score was 6.8 points

-Next 3 events- average score was 7.2 points

First find out how many points Willy has already scored

6.8x5=34 points

In the first 5 events, Willy scored 34 points

7.2x3=21.6

In the next 3 events, he scored 21.6 points

34+21.6=55.6 points

Altogether, Willy scored 55.6 points in the first 8 games

75-55.6=19.4

In order to advance with a score of exactly 75, Willy needs to score 19.4 points

a+a=19.4/2=average Willy needs for the last two events

2a= 19.4/ 2= average

2a/2= 19.4/2= average

a=19.4/ 2= average

a=9.7=average

Willy needs an average score of 9.7 points in his last two games in order to advance with a final score of exactly 75 points.