the average of three numbers is20 .if two of these numbers are 16 and 21 then the third number is
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Answered by
1
Answer:
23
Step-by-step explanation:16+21+x divided by 3=20
37+x=60
x=60-37
x=23
Answered by
2
As we know that average is equal to
Let the third number be x.
Average= sum of all outcomes/total outcomes
20= 16+21+x/3
20= 37+x/3
20×3= 37+x
60 = 37+x
x= 60-37
x= 23
The third number is 23
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