 So for this example we've got a couple different numbers. Machine A takes five seconds to complete this task. Machine B is taking eight seconds to complete a task. And we're just interested to see how much faster Machine A is than Machine B. So again we'll have our relative performance equation and we'll be interested in time here. So again we're looking at Machine A relative to Machine B. So Machine A is going to be time one. It takes Machine A five seconds to solve this task. Machine B then is going to be number two. So it's going on the top where we have eight seconds. So again our seconds will cancel. We'll get eight divided by five or point six. Which tells us that Machine A is one point six times faster than Machine B. Again if we were interested in the relationship between Machine B and Machine A we could invert this ratio. We'd get five eight and then we'd say that Machine B is five eighths as fast as Machine A. But in this case the question is asked about Machine A relative to Machine B.