Question

In a in 3 digit number . The hundreds digit is twice the unit (once) digit and the tens digit is equals the difference between the two end digits.If the sum of three digit is equals 16. Find the number .

Answer 1

suppose unit digit is x then 100s is 2x and tens digit is 2x- x = x

now sum of three digit = 16
2x+x+x =16
4x=16
x= 4
so the number is 844.

ans is 844.