Question

the digit in the tens place of a two digit number is 3 times that in the units place. if the digits are reversed, the new number will be 36 less the original number. find the original number. check your solution

Answer 1

Hi Friends ✋✋

let the digit in tenth place be 'x'

and ones be 'y'

(1)....

x = 3y


(2).....

10x + y = x + 10y + 36

9x - 9y = 36

---------------------------

from (1) and (2)

27y - 9y = 36

y = 2

and

x = 3 * 2 = 6

the number is 63