Question

A number has two digit 5 and 7and teens and unit digit it's expendend
from 5x7+10 write the expendend
from of number whose unit and tens
digit are x and y.​

Answer 1

Answer:

Given the two digit number (10x+y), where y = 5

And also given, x+y = (1/5) (10x+5)

solving for x,

(x+5)5=10x+5

5x+25 = 10x+5

or x=4

the required number is 45