Answer:
the distance from Jamestown to River City is 83 miles
Step-by-step explanation:
The distance from Gardenville to Jamestown is 76 miles. The distance from Gardenville to River City is 159 miles.
Let G be Gardenville and J be Jamestown and R be rivercity
[tex]GJ= 76 miles\\GR= 159 miles\\find (JR)[/tex]
[tex]GR= GJ+JR\\159=76+JR\\JR=159-76=83[/tex]
the distance from Jamestown to River City is 83 miles