Question

a) The average of 7 numbers is 15. The sum of the numbers is ___________.

Answer 1

formula:

$average = \frac{sum \: of \: no.}{no.of \: numbers}$

solution:

let the sum of numbers be x

ATQ

$\frac{x}{7} = 15 \\ x = 15 \times 7 \\ x = 105$

answer:

The average of 7 numbers is 15.The sum of the numbers is 105 .

hope it helps...

Answer 2

Given - Average of number

Find - Sum of numbers

Solution - The sum of the numbers is 105

The average is given by the formula = sum of all the numbers/numbers

Keeping the values in the formula to find the sum of numbers

Sum of numbers = 7*15

Performing multiplication to find the value of sum of numbers

Sum of numbers = 105

So, the sum of the numbers is 105