Question

the digit in the tens place of a two digit number is 3 times of that in the ones place
if the digits are reversed the new number will be 36 less than the original number find the number

Answer 1

x= 3y......(i)

10y+x = (10x+y) - 36
x-y = 4
x=y+4........(ii)

equating equations (i) and (ii)

3y= y+4
y= 2

substituting the value of Y in equation (i) we get
x= 6

show the original number was
62