Question

Sum of two digits of a 2-digit number is 7. If the digits are reversed, the new number so formed decrease by 27. Find the number ​

Answer 1

Answer:

52

Step-by-step explanation:

Let the ones digit=x

tens digit=7-x

Number=10*(7-x)+1*x

=70-10x+x

=70-9x

New No.=10*x+1*(7-x)

=10x+7-x

=9x+7

ATQ

9x+7=70-9x-27

9x+9x=43-7

18x=36

x=2

So no. formed= 70-9x

=70-9*2

=70-18

=52