Question

The sum of digits of two-digit number is 7. When the digits are reversed, the number is increased by 27. Find the numbers.

Answer 1

Answer:

Step-by-step explanation:

Number: x+y

x + y = 7--> x = 7-y

10y + x = 10 x + y + 27

Simplify:

9y = 9x + 27

9y = 9(7-y) + 27

9y = 63 - 9y + 27

18y =90

y = 5

x = 2

The number is 25.