how many more candles could machine B pack than machine A in 12 minutes

Let's begin by identifying key information given to us:
For Machine A, we have the rate as shown below:
[tex]\begin{gathered} MachineA=\frac{600}{5}=\frac{1200}{10}=\frac{1800}{15}=\frac{2400}{20} \\ MachineA=120candies\text{/min} \end{gathered}[/tex]The equation for Machine B is given by:
y = 150x