Answer
Thus, 26.4 million participated in swimming, while 14.5 million people participated in running.
Work Step by Step
We first write the two equations: $s=2r-2.6$ $s+r=40.9$ Note, the numbers are in millions. We substitute to find: $(40.9-r)=2r-2.6$ This gives: $3r=43.5$ $r=14.5$ This means that the number of women, in millions, who participated in swimming is: $s=40.9-14.5=26.4 $ Thus, 26.4 million participated in swimming, while 14.5 million people participated in running.
