Question

i a two digit number the digit at the units place is double the digit in the tes place . the number exceeds the sum of its digits by 18 find the number

Answer 1

Let the number be x+10y
According to the question,
x=2y
And x+10y=x+y+18
or, 9y=18
or, y=2
Therefore, x= 2y
=2x2
=4
Now, the number is x+10y
= 4+(10x2)
=4+20
=24
Therefore, the number is 24