Answer:
$1382
3455 is 5/7 of salary so divide 3455/5 = 691
then multiply 691x2 because rent is 2/7 of salary
691x2 = 1382
The factors and 75 is 175 and 25 and three and five and 30
I believe it is 105 since if added together they make a linear pair(I believe) so, 180-75 equals 105.