Answer:
5390 gallons of water was wasted by the city's residents last year.
Step-by-step explanation:
Let [tex]x[/tex] denotes gallons of water wasted by the city's residents last year.
Gallons of water wasted by the city's residents this year = 2695 gallons
This is 50% less than last year.
Therefore,
[tex]x-\frac{50}{100}x=2695\\\\\frac{50}{100}x=2695\\\\\frac{x}{2} =2695\\\\x=2(2695)[/tex]
[tex]x=5390[/tex] gallons
So, 5390 gallons of water was wasted by the city's residents last year.
