Question

In a two digit number unit digit is 3 more than double of ten's digit.If by
interchanging the digits a new number is obtained which is 15 more than the
double of the original number. Find original number.​

Answer 1

Step-by-step explanation:

please mark has brainliest answer me

Answer 2

Answer:

The number is 39.

Step-by-step explanation:

let the number on unit place be 'x' and the number on tenth place be 'y'.

As per the first given condition,

x= 2y + 3 …………………(1)

As per second given condition

2 (10y + x) + 15 = 10x + y

20y + 2x +15 = 10x + y

8x - 19y = 15 ………………………(2)

Now,

putting (2) in (1), we get

16y + 24 - 19y = 15

-3y = -9

y=3. _______________(3)

putting (3) in (1), we get

x = 6+3

x=9

hence the number is 39...

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