Question

By reversing both the digits of the
number B we get the number A. If the
number A is greater than the number
B by 45, find the number A:
(1) 54
(2) 63
(3) 72
(4) 81
​

Answer 1

Answer:

your ans is 63

Step-by-step explanation:

pls mark it as brainliest.

Answer 2

The required "option 3) 72" is correct.

Step-by-step explanation:

Let the unit's digit of number = y and

The ten's digit of number = x

∴ The number A = 10x + y

To find, the number A = ?

By reversing both the digits,

The number B = 10y + x

According to question,

10x + y - (10y + x) = 45

⇒ 10x + y - 10y - x = 45

⇒ 9x - 9y = 45

Dividing both sides by 9, we get

⇒ x - y = 5          ...... (1)

The suitable option 3) 72 = 7 - 2 = 5

Thus, the required "option 3) 72" is correct.