Question

One number is three times of the other and their arithmetic mean is 10 find them​

Answer 1

Explanation:

data

let the unknown numbers = x and y respectively

y is 3 × greater than x so, y = 3x

x+y/ 2 = 10

solution:

x + 3x= 10

4x=10

divide both sides by 4

x=4/10 or 2 1/2