Question

The sum of digits of a two digit number is 7. When 27 is added to the number, the digits get reversed. Find the number.
25
52
B
45
54​

Answer 1

Let the two digit be x & y.

GIVEN THAT

• x + y = 7 _(i)
• 10x + y + 27 = 10y + x _(ii)

Solving above Equation

• 10x + y + 27 = 10y + x
• 9x - 9y = -27
• x - y = -3
• 7 - y - y = -3 [x = 7-y]
• 2y = 10
• y = 5

• x = 7 - 5
• x = 2

Numbers are 2 & 5

Two-Digits Number → 25 or 52

Answer 2

Step-by-step explanation:

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