Andy has read 4 chapters in 2 hours. If he continues reading at the same rate how many chapters will he have finished after 5 hours?

Respuesta :

10 chapters in 5 hours 

4 ch/2 hrs
unit rate: 2 ch/hr
2 ch   (*5)     x    
------     =    ------
1 hr   (*5)   5 hrs
1(5) = 5
2(5) = 10 
x = 10