Question 1139109
Bought cost was 36.625*200+4.25=$7329.25
Sold revenue was 52.16*200-8=$10424
He made the difference between those two or $3094.75

15 and 18 have a common integer multiple at at least their product, or 270, but they also have a least common multiple at 90 hours, 6 orbits for the shorter orbital time and 5 orbits for the longer orbital time.