the average of 3 numbers is 25... -> 20:25:30 == 4:5:6
30 is the answer bro
@Srini :
let the numbers be 4x 5x 6x
average is (4x + 5x + 6x) / 3 = 25
ie., 15x / 3 = 25
ie., 5x = 25 => x= 5
the numbers are 20 : 25 : 30
the largest number is 30.
make the squares first 16:25:36
now add it 16+25+36=75
avg 75/3=25
largest number 30