What's the way to finding a solution?

Can someone answer this question for me

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer