A machine fills 420 bottles in 3 hours. How many bottles will it fill in 5 hours?
More the no of bottles, more will be the time. So it is a direct proportion.
Let the bottles be x, 
⇒ x = 
= 700
3
A machine fills 420 bottles in 3 hours. How many bottles will it fill in 5 hours?
More the no of bottles, more will be the time. So it is a direct proportion.
Let the bottles be x,
⇒ x = = 700