Answer:
13,888.88 gallons per second must be pumped from the adjacent Lake Michigan every second to supply the city.
Step-by-step explanation:
Gallons of water used by Chicago city in 1 day =
![1.2* 10^9 gal](https://img.qammunity.org/2019/formulas/chemistry/college/nwyc6202fgfefokbyzrlpehj1vvtyrrrbi.png)
1 day = 24 hours
1 hour = 60 mins
1 min = 60 seconds
![1 day=24* 60* 60 min = 86,400 seconds](https://img.qammunity.org/2019/formulas/chemistry/college/5gxrreiqjln5r6zho29wwfzr3vjbmxmzga.png)
Gallons of water used by Chicago city in 86,400 seconds :
=
![1.2* 10^9 gal](https://img.qammunity.org/2019/formulas/chemistry/college/nwyc6202fgfefokbyzrlpehj1vvtyrrrbi.png)
Gallons of water used by Chicago city in 1 second:
![(1.2* 10^9 gal)/(86,400)=13,888.88 gal](https://img.qammunity.org/2019/formulas/chemistry/college/fvs52gamfy3ocoox61362x4tjqji53b0ia.png)
13,888.88 gallons per second must be pumped from the adjacent Lake Michigan every second to supply the city.