[填空题]
A fast-food restaurant uses a conveyor belt to send thebu/bl a .c9.nb burg vol+ ds:/pcm6i *(rzmers through a grilling machine. If the grilling machine is 1.1 m long and the burgers require 2.5 min to cook, how fast must the conveyor belt travel? If the burgers are spaced 15 cm apart, what is the rate of burger production (in burge:crzsp(vo d6mml i+ /*rs/min)?
m/min
$\frac{burgers}{min}$
