Answer:
5/18
Explanation:
3/5 is 2/5 less than one whole
We need to find how much they traveled in 2/5 of an hour and add that to 1/6
In 1/5 of an hour, they traveled 1/18 of a mile
(1/18)*2=1/9
1/9+1/6=10/36
10/36=5/18
They traveled 5/18 in one hour