Question

in a two digit number the tens digit is 3 times the unit digit when a number is decreased by 54 the digit is reversed set up a linear equation in two variable

Answer 1

let the number at unit digit be x
then the tens digit no. is 3x
then the number is 10*(3x)+x
now , 30x+x- 54 = 10x+3x
30x+x-13x = 54
18x = 54
x = 3
therefore the number is 30*3+3= 93