Question

In a two digit no.,the digit at the units place is double the digit in the tens place. The no. The no.,exceeds the sum of its digit by 18.find the number

Answer 1

Answer:

24

Step-by-step explanation:

let the 2digit number be 'xy'

given y=2x

also given number exceeds the sum of its digits by 18

10x+y=x+y+18

but y=2x

10x+2x=x+2x+18

12x=3x+18

12x-3x=18

9x=18

x=2..

y=2x=2(2)=4

hence the digit number is 24