Question

The average of 5 numbers.is 9.Sum of
5 numbers is​

Answer 1

Answer:

The answer is 45

Step-by-step explanation:

HOPE IT HELPS

Answer 2

Answer:

1

2

The average of 5 numbers is 9 and the average of the last three numbers is 5. What is the average of the first two numbers?

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Udit Gautam

Answered January 28, 2020

Let the five nos. be a, b, c, d and e.

Given,

(a+b+c+d+e)/5=9

So,

=>a+b+c+d+e=5×9=45

Also given,

(c+d+e)/3=5

So,

=>c+d+e=5×3=15

So,

=>a+b+15=45

=>a+b=45–15=30

Now,

=(a+b)/2

=30/2

=15

Hence, the average of first two numbers is 15

Hope it helps

Thank you

Average of 5 numbers is 9

Aveage of the numbers = Total Sum of the numbers ÷ Number of Numbers

Therefore, the total sum of 5 numbers is 5*9 = 45

It is also given that,

The average of last 3 numbers is 5

Which implies that the total sum of last 3 numbers is 3*5 = 15

As the total sum of 5 numbers is 45 and that of the total sum of the last 3 numbers is 15, the total sum of the first 2 numbers is 45–15 = 30

Hence, the average of first 2 numbers is

Total Sum of the numbers ÷ Number of Numbers

= 30÷2

= 15