What is the average?
Probability
Level
2
The average of 5 numbers is 3.8. If 4 and 6.3 are added to the numbers, what is new average, (rounded to 1 decimal place)?
4.3
4.1
4.0
4.2
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1 solution
the sum of the first 5 numbers is 19. 4 and 6.3 are added so it becomes 29.3. then divide it by 7, the answer is 4.2