Question

Sum of the two digits number and the number obtained by interchanging the digits by 77.Ten's digit is 3 more than unit's digits.Find the number?​

Answer 1

Answer:

52

Step-by-step explanation:

let the no. be 10m+n and interchanged no.be 10n+m.

10m+n+10n+m=77

10(m+n)+m+n=77

11(m+n)=77

m+n=7...................... (1)

given m-n=3........... (2)

from 1 and 2,

m=5 and n=2

and the two digit no. is 52