Answer:
102
Step-by-step explanation:
The average is calculated using
average = [tex]\frac{totalscore}{count}[/tex]
let your score be x, then
[tex]\frac{3+15+x}{3}[/tex] = 40 ( multiply both sides by 4 )
18 + x = 120 ( subtract 18 from both sides )
x = 102 ← your number
Answer:
102
Step-by-step explanation:
The average is calculated using
Average =
Let your score be x, then
= 40 ( multiply both sides by 4 )
18 + x = 120 ( subtract 18 from both sides )
x = 102 ← your number
