Let x = Alice's salary
Let $480 = amount she gave to her father
Let .25(x-480) = amount she gave to her mother
These two amounts represent 43% of Alice's salary
This is Alice's salary.
the amount she gave to her mother.
So, she gave $480 to father, $380 to her mother which is a total of $860 to her parents which is 43% of 2000. She saved $300. She had $840 left to spend on beer and cigarettes or whatever.