Question 943255
If the average of 3 scores is 81, the sum of the scores is 3(81)=243
first score is F; second score is S; S=F+11; Third score is T; T=S+5=F+16
Since F+S+T=243,
F+(F+11)+(F+16)=243
3F+27=243 Subtract 27 from each side
3F=216
F=72 ANSWER her first score was 72
S=F+11=83 ANSWER her second score was 83
T=S+5=83+5=88 ANSWER her third score was 88
CHECK
(72+83+88)/3=81
243/3=81
81=81