Question

solve this problem with solution

Answer 1

Let the digit in tens place be x
The digit in one place be y
Therefore the number is 10x +y
Aq to question.
x = 4y
x+y =10

=> 4y + y =10
=> 5y = 10
=> y =10 /5
=> 5
Also
x = 4y
=4 x 2
=8

Hence the number is 10x + y
= 10 x 8 + 2
= 82