Question

Q1-in a two digit number the unit digit is four times the tens digit and the sum of the digit is 10 find the number.

Q2-the unit digit of a two digit number is 3 and seven times the sum of the digit is the number itself find the number.

Answer 1

Q1) X=4Y x+y=10
y=2,x=8 ;28
Q2)7(x+3)=10x+3
x=6;63