2farmers can plough a field in 6 hours. how long does it take for 3 farmers to plough a field?

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy

Ihonestly have no clue if it's each or none.

Using inductive reasoning, what are the next two number in this set? 2,3/2,4/3,5/4,