5/9 of a town's population is 2015 persons what is the town's population

Question

5/9 of a town's population is 2015 persons what is the town's population

 

 

 

 

Answer 1

By cross-multiplication: 

 

Part          Part

_____ =   _____

Whole       Whole

 

 

5    2015

_ = ____

9       x

 

x=town's population

 

9*2015=5x

 

Multiply 9*2015 = 18, 

18,135 = 5x

 

Divide both sides by 5

Answer 2

Let x = town's population

 

(5/9)x = 2015

 

Multiply both sides by 9:  5x = 18135

 

Divide both sides by 5:  x = 3627