Question

Find the average of 10 numbers ,if the average of first six number is 15 and the last four numbers is 18

Answer 1

Answer:

Step-by-step explanation:

Answer 2

The average of 10 numbers is 12.2.

Step-by-step explanation:

Since we have given that

Average of first six numbers = 15

Average of last four numbers = 8

So, sum of first six numbers would be

$15\times 6=90$

Sum of last four number would be

$8\times 4=32$

According to question, the average of 10 numbers would be

$\dfrac{90+32}{10}\\\\=\dfrac{122}{10}\\\\=12.2$

Hence, the average of 10 numbers is 12.2.

# learn more:

How to solve this type of question ,please tell me...

The average of six numbers is 30.If the average of first four is 25 and that of last three is 35, the fourth number is :

A) 25

B) 30

C)35

D)40

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