Victor malaba has a net income of $1,240 per month. if he spends $150 on food, $244 on a car payment, $300 on rent, and $50 on savings, what percent of his net income can he spend on other things?

Lets start with what we know
salary=1240.00 USD
expenses=150+244+300+50=$744.00
other things= 1240-744=$ 496.00
to find out what percent he can spend on other things, we do the following

1240100%
496?%

x=496*100/1240= 40%

The expression of this would be 3.75x+y= 23