Question

The number has two digits. The digit at tens place is four times the digit at units place. If

54 is subtracted from the number, the digits are reversed. Find the number.​

Answer 1

Step-by-step explanation:

41 - 14 = 27 (not 54)

82 - 28 = 54

Answer:

The original number is 82

You could do this mathematically, but it is almost overkill. Let's do it anyway.

Let U be the units digit

Let T be the tens digit

The original number is 10T + U

The reversed number is 10U + T

The difference is 54:

10T + U - (10U + T) = 54

9T - 9U = 54

9(T - U) = 54

T - U = 6

We also know that T is 4U, so substitute:

4U - U = 6

3U = 6

U = 2

T = 4U = 8

The number is 10T + U = 80+2 = 82

Answer:

82..

Answer 2

Answer:

82

Step-by-step explanation:

Solution: let the two digit number be 10x + y

according to the question:

x = 4y

also,

(10x + y ) - 54 = 10y + x

on solving this

=> 9x - 9y = 54

=> 9( x-y) = 54

substituting 4x = y

=>4y-y= 6

=> 3y = 6

=> y= 2

=> x = 8

so the no is 82