The rule is to put them in order
Answer:
You would win the race
Step-by-step explanation:
You would have to swim for 2 minutes and 40 seconds which is the same as 160 seconds.
The opponent would swim

Which is161.5 seconds
This means you would win
divide both sides by a
subtract b from both sides
multiply all terms on both sides by -1
c=b-d/a
We normally think of 3x7, but the "7" is one more than 2 widths ... double the 3 and halve the 7 ==> 6 by 3.5 works ...