Question

I need four questions answer please

Answer 1

1>2 and 62
2>-20
3>sorry i do not know the rest my head is starting to spin

Answer 2

let the 1st no be x and the other be 3x.
atq:
3x-x=50
2x=50
x=25
so that 1st no =x=25
and the other no =3x=25×3=75