Question

in a 2 digit number, digit in unit place is twice the digit in tens place. if 27 is added to its, dihits are reversed. find the number.​

Answer 1

Answer:

36

Step-by-step explanation:

let the number in tens place is x

let the number in unit place is y

the number will be 10x + y

y = 2x

if 27 is added the number is reversed

10x + y + 27 = 10y + x

10x + y - 10y - x = -27

9x - 9y = -27

9(x - y) = -27

x - y = -27/9

x - y = -3

x - 2x = -3

-x = -3

x = 3

y = 2x

y = 2(3)

y = 6

the number is 10x + y

= 10(3) + 6

= 30 + 6

= 36

hope you get your answer