Question

if a two digit number if the digit in tens plac is three times the digit in units place if the number is reversed then the number becomes 36 find the number​

Answer 1

Let the one's digit be y and tens digit be x,

Number = 10x + y

Then,x=3y⋯(i)
Reversed number = 10y + x
A.t.Q :- (10x+y)−(10y+x)=36 Put x = 3y in eq. (i)

⇒9x−9y=36
⇒x−y=4⋯(ii)

⇒3y−y=4
∴2y=4 x=3y ∴x=6

y=2
∴ Number = 62