[填空题]
A fast-food restaurant usew) tv/-xz2 j1 kd3c-i0 yp3qshd ut:nss a conveyor belt to send te:xxitsslhg4 doio7i7it /,; w.s/7z he burgers through a grilling mach7ix /.goh;7ts iieti :s4 sox/,dzlw 7ine. 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 burgers/min)?
m/min
$\frac{burgers}{min}$
