Question

A study indicated that residents of manchester wasted 2695 gallons of water this tear. That is 50% less than last year . How many gallons of water did the city's residents waste last year?

Answer 1

5390 gallons of water was wasted by the city's residents last year.

Explanation:

Let
`x` 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,

`x-(50)/(100)x=2695\\\\(50)/(100)x=2695\\\\(x)/(2) =2695\\\\x=2(2695)`

`x=5390` gallons

So, 5390 gallons of water was wasted by the city's residents last year.