Question

the sum of the of a two digit number is 7 the number got by interchanging the digits is 27 more than the original number what is the number​

Answer 1

Step-by-step explanation:

let x be the digit in ones place,

let y be the digit in tens place.

the number be 10y+x

interchanging the digits,

the number is 10x+y

: .(10x+y)-(10y+x)=27

9x-9y=27

x-y=3

x+y=7

2x=10

x=5

y=7-5=2

the original number is 25.