I believe your answer is 4 4/9 as a mixed fraction but it can also be 40/9. Hope this helps :)
Answer:
6 sqrt 3
Step-by-step explanation:
The first two days he will both swim and bike are days 24 and 56.
Swim: Days 6,12,18,24,30,36,42,50,56
Bicycle: Days 8,16,24,32,40,48,56,
A
Hopefully this helps