Question

The digit in tens place of a two digit number is four times the digit in ones place .if you interchange the digits of this two digit number and add the resulting number to the original number, you get 55. What is the original number

Answer 1

Answer:

x= 4

y=1

Step-by-step explanation:

let the digit at tens place be x

let the digit at ones place be y

ATQ

x=4y (1)

55= 10y+x+10x+y

or x+y= 5 (2)

adding (1) and (2)

x= 4y

+x+y-5=0

so, x= 4

y=1