Question

Two numbers have a average of 17. If one of the numbers is 11, what is the other number

Answer 1

Other number is 23

Explanation:

Let the two numbers be x and y.

We have given that average of x and y is 17.

i.e
`(x+y)/(2) = 17`

if one of the number is 11,

Then ,
`(11+y)/(2) = 17`

or (11 + y)/2 = 17

or 11 + y = 34

or y = 34 - 11

or y = 23