the average of three numbers is 6. the average of the first and second is 7, what is the value of the third number?
Question
Question
the average of three numbers is 6. the average of the first and second is 7, what is the value of the third number?
Answer:
4
Step-by-step explanation:
the sum of the first two numbers is 7*2=14 and the sum of the three numbers is 6*3=18 then you subtract the answers giving you 4