Question

Average of three numbers is 30. The first number is double of the second
and the third is double of sum total of first and second number:
What are the numblers​

Answer 1

Step-by-step explanation:

I have attached the solution

Thank you for the points.

Answer 2

Step-by-step explanation:

let first no. be f, second s , third t

f = 2s

t = 2(f+s)

t=2(2s+s) = 6s

average =30

=> f+s+t = 30×3=90

2s+s+6s =90

9s =90

s=10

f=2×10=20

t=6×10 = 60

no.s are 20, 10, 60