PLEASE HELP

Question

Bill has a paper route. It takes him 60 minutes to deliver newspapers to his 40 customers. How long will it take Bill to complete his route if he adds 20 more in his neighborhood? Show you work

Answer 1

40/60 = 60/x

Solve for x

40x = 3600

x = 90 min

 

or 

 

60/40 = 1.5 min per customer

1.5 min x 60 customers = 90 min