The average of 4 numbers is 6.3.The average of six other numbers is 6.8 . What is the average of all the numbers?
回答 (2)
2016-06-22 5:03 pm
Average of all the ten numbers
= (Sum of all the ten numbers) / 10
= [(Sum of the four numbers) + (Sum of the other six numbers)] / 10
= [(6.3 × 4) + (6.8 × 6)] / 10
= 66/10
= 6.6
= (Sum of all the ten numbers) / 10
= [(Sum of the four numbers) + (Sum of the other six numbers)] / 10
= [(6.3 × 4) + (6.8 × 6)] / 10
= 66/10
= 6.6
2016-06-22 5:02 pm
Sum/4 => 6.3
Total = 4 x 6.3 => 25.2
Sum/6 = 6.8
Total = 6 x 6.8 => 40.8
Overall total is 25.2 + 40.8 = 66
Hence, overall average is 66/10 => 6.6
:)>
Total = 4 x 6.3 => 25.2
Sum/6 = 6.8
Total = 6 x 6.8 => 40.8
Overall total is 25.2 + 40.8 = 66
Hence, overall average is 66/10 => 6.6
:)>
收錄日期: 2021-04-18 15:12:13
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