Question

Question no. 9 please solve

Answer 1

Let the unit digit be x
Tens digit = 2x

A/Q,
2x + x = 6
3x = 6
x = 2

Units digit = 2
Tens digit = 2 x 2 = 4
The number is 42

Answer 2

let the digits be x and 2x
x + 2x = 6
3x= 6
x = 6/3
x= 2
2x = 2*x
= 2*2
= 4
So unit digit is 2 and tens digit is 4.
the no. will be 42