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lianna [129]
2 years ago
7

in a set of 5 numbers the average of two is 12 the average of the other 3 is 7 what is the average of all five numbers. (fractio

n or whole number)​
Mathematics
1 answer:
UNO [17]2 years ago
3 0

Answer:

The average of all 5 numbers is  9

Step-by-step explanation:

Two of the numbers average 12. That means that their total is 2*12 = 24

Three of the other numbers average 7. That means that their total is 7*3 = 21

The total score for the 5 numbers is 24 + 21 = 45

The average for all 5 numbers is 45/5 = 9

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