Question

The average of 11 numbers is 54, the average of first four number is 48 and that of next four is 25% more

Answer 1

Answer:

the average of 11 number is 54

the value is 56

Answer 2

The required average is 54.

Step-by-step explanation:

Since we have given that

Average of 11 numbers = 54

So, sum of 11 numbers would be

$54\times 11=594$

Average of first 4 numbers = 48

So, Sum of 4 numbers would be

$48\times 4=192$

Average of next four = 25% more = $1.25\times 48=60$

So, Sum of next four numbers = $60\times 4=240$

So, the remaining sum of last 3 numbers would be

$192+240+\sum x=594\\\\432+\sum x=594\\\\\sum x=594-432\\\\\sum x=162$

So, Average of last three numbers would be

$\dfrac{162}{3}=54$

Hence, the required average is 54.

# learn more:

The average of five numbers is 56.if the average of first four number is 54.what is the value of the fifth number​

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