Answer: So Steve complete the 100m dash in 10 seconds, and Paul in 12 seconds. And you want to compare the times:
you can do it in two ways, first the difference:
12 - 10 = 2, so paul needs 2 more seconds to complete the 100m, but this doesn't give us much information.
now the quotient:
We can divide the times, and obtain a ratio between them:
so the time of Steve is 10/12 = 0.83 times the time of Paul.
you also could do 12/10 = 1.2, this says that Paul time is 1.2 times the time of Steve.